10.5 black nitride 300 ABC blackout barrel. 1996-2023, Amazon.com, Inc. or its affiliates, Select a location to see product availability. +7 colors/patterns. Shipping: Free to High Modify Search . 300 Blackout - DrumMagazines.com 4.8 (32) Save 13%. Get the best deals for 300 aac blackout magazines at eBay.com. Some of the most popular magazines for the AR are the 5.56 NATO/.223 Rem and the .300 Blackout. JavaScript seems to be disabled in your browser. $ 20.00 - $ 23.00. That said, in general, there are two types of magazines in .300 Blackout, metal, and polymer. Handy area to stage the rounds for easy loading. $169.99, Sale The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout (300 BLK). 2) Magpul PMAG 300 BLK Gen M3. By Adam Scepaniak. Lancer also has a short 20-round magazine. The .300 AAC BLK offers a .30 caliber round for those who want to perform with a .30 caliber projectile, with equipment like the M4 carbine. Magpul uses polymer feed lips, and are incredibly proven performers in any environment, but if you prefer steel feed lips youll want to look for Lancers or other brands that dont put polymer in their lips, which can be a matter of both preference and overall reliability. We're proud to offer Military/Veterans, First Responders, and Government Employees special pricing. Features an easy-to-use loading lever, paint pen dot matrix for easy marking, and a rear window for instant capacity indication. 4.6 (17) Magpul PMAG 5 7.62 AC AICS Short Action 7.62 x 51mm NATO Magazine. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. L5AWM 300BLK 30 Magazine. Export Administration Regulations Controlled Product. Magpul DB15 300 BLACKOUT PMAG 30 Round AR/M4 B Gen M3 DB15300BO For the best experience on our site, be sure to turn on Javascript in your browser. We use cookies to improve your website experience. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here 2023 Copyright, entire contents by CTD, Inc. Cheaper Than Dirt! There is, however, a significant advantage to using a magazine thats made for a specific caliber. Ruger Mini-14 Magazine .300 AAC Blackout 20 Rounds Laser Engraved Metal Dark Fin. $ 18.99. The improvised and revised version of this mag has a better feeding system that delivers durability, reliability, and the fun of shooting without any errors. Generally, the best option is to opt for polymer magazines that have been designed specifically for .300 Blackout ammunition. Magpul PMAG 30 AR 300 B Gen M3 Magazine, .300 AAC Blackout, 30 Rounds, Black. Get outstanding performance at an affordable price with Ammo, Inc. 300 Blackout Ammo, . Ive never tried it but i have had issues with 300 blackout and traditional 5.56 mags. 300 Blackout Ammo | .300 ACC Blackout Rounds For Sale - OpticsPlanet 32 ACP / Automatic Dummy. 2023 GunMag Warehouse. The PMAG D-60 is a durable, lightweight, highly reliable 60-round 5.56x45 NATO/.223 Remington polymer drum magazine for AR15/M4 compatible weapons. What Is .300 AAC Blackout Good For? (Complete Guide) Copy this link and share it with your friends. Headstamp-to-Headstamp: 300 Blackout vs 5.56 - American Firearms LANCER L5AWM 10rd Magazine - Translucent Smoke. Having magazines for rifles chambered in .300 Blackout will mitigate cross-loading, provide additional safety measures, and give you another reason to add to your kit. Both calibers have approximately the same recoil with most of the recoil energy being directed to the shoulder. $179.85 $0.59. allows for no separation of ammunition during function to easily handle firing This drum mag is made in the US with the most groundbreaking innovation using the latest 5-Axis machining technology. When reviewing guns or gear, we get our hands on as many products as possible, but there are times when certain products or categories are a real challenge be it availability, cost, or simply a lack of resources we can get stymied going hands-on with all the potential candidates. 5.56 vs 300 Blackout | The Ultimate AR Caliber Showdown! - Lynx Defense The unique drum configuration keeps the height of the magazine manageable and allows for prone firing and easier storage. Its a thing. .300 AAC Blackout (also known as .300 BLK or 7.62x35) is a cartridge originally developed for U.S. military special operations. F5 MFG presents one of its finest and robust drum mags, the skeletonized 50 round drum magazine for your AR 15. $148.99, Sale AR 300 blackout drum mag for Sale | Sportsman's Outdoor Superstore | Page 2 Add to cart. Using different magazines for each rifle chambered in a specific caliber is an affordable piece of insurance against that kind of preventable mistake and offers a decidedly cheap way to enable diligent ammunition management ensuring rifles chambered in .300BLK are fed the right ammo. 300 Blackout Ammo Common Uses & History The AR-15 platform can be adapted to fire a variety of calibers other than the original .223/5.56.One of the most widespread of these alternatives is the .300 AAC Blackout, also known as the 300 BLK and the 7.62x35mm. Gorilla Ammunition .300 BlackOut 115gr, Controlled Chaos, Pig Punisher - 20 Round Box. Skip to the beginning of the images gallery, As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Your high capacity magazines super store. I think that this tradeoff can be acceptable, but since magazines are relatively affordable to begin with, it makes more sense to go for magazines that are intended to work with the caliber that I plan to shoot the most, even if something else will get the job done. Ruger Mini-14 Magazine | Cheaper Than Dirt Magpul Industries cannot process sales/shipments prohibited by law. EXPORT NOTICE:This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). (L to R) 5.56 NATO, .300 BLK, .30 Carbine. Page 1 of 2. Ruger SR-556 6.8mm SPC 5-Round Magazine. Fits most M16/AR-15 rifles, Bushmaster ACR and Stanag rifles with improved M4 feed ramps . In subsonic AR systems, it offers higher ballistic performance and stopping power than the normal 9mm (the . 10 Pack 300 Blackout Magazine Bands with .300 Blackout Grooved Printing On Both Sides -Quick to Find The Right Mag,Never Pick Up Wrong Mag Again! Best Magpul PMAGs: All Of Them Reviewed - Pew Pew Tactical Sign up and receive information on new items and offers from us. Inserting an empty magazine and manually cycling the charging handle will not activate the bolt hold-open feature. Whats most important about a good .300 Blackout magazine is that it works well with your build and enables you to switch between common AR rounds safely and effectively. RTB is now offering our own line of .22LR parts and accessories. Quality options can be found for as little as $15 (or less with a decent sale) and you should have no fewer than 5 mags for every gun you own, so theres really no excuse not to stack them deep. May require modification to work in Robinson Arms XCR, and the SCAR 16. $1.500 Per Round. Sale! Therein lies the potential for misuse. Optimized internal geometry accommodates the wide variety of bullet profiles used in 300 Blackout cartridges. Magazines - Diamondback Firearms 15. Lowest price in 30 days. $29.99. Constructed of next-generation impact and crush resistant polymer. JavaScript seems to be disabled in your browser. While the latter can certainly be used in most cases, most of the time, some people have had slight feeding issues with 5.56mm magazines feeding .300 Blackout from magazines that have a high round count. 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. $18.99, Sale KCI AR-15 Drum Magazine, .223 Rem./5.56 NATO, 50 Rounds. DB380 6 Round Magazine with Finger Extension, .380 $ 15.99 $ 13.59. $ 25.00 - $ 32.00. Find 300 AAC Blackout/Whisper (7.62X35mm) Ammo for sale, in-stock and ready to ship at Ammo Freedom. ENJOY FREE SHIPPING ON ORDERS OVER $300. It is the original design of F5 and is machined out of billet 6061 aluminum for unmatched functionality and rigidity. Description Brand Capacity Price Count PPM. 300 AAC Blackout Magazines. Best 300 Blackout Magazine | Top 10 300 Blackout Magazines - AmmoFire $101.00, Special Price These controls take the form of export regulations and license requirements. Due to the side-by-side staging of single Gun Magazines & Clips | Rifle, Pistol, Shotgun Mags This magazine also works . Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. You can expect any AR 223 mag or 300 AAC Blackout AR magazine to work every time you take it out for target practice. The updated internal magazine geometry allows these longer heavier bullets to stack properly, which increases feeding reliability when compared to a traditional .223/5.56 magazine. Wanting something with better performance than 5.56 NATO, top military officials sought a .30-caliber round capable of ballistic performance similar to the Russian 7.62x39mm (think Soviet SKS and AK-47). The store will not work correctly in the case when cookies are disabled. Daniel Defense Magazine AR-15 223 Remington, 5.56x45mm, 300 AAC Blackout 32-Round Polymer Black. With a little bit of forethought, this can be done with something as simple as a paint pen and a few minutes of your time. The RTBA brand brings you the only lightweight .22LR pencil barrel on the market at an affordable price! . 41 Reviews. The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout (300 BLK). Minus 10 Round Limiter PMAG AR/M4 GEN M3, 3 Pack, Minus 5 Round Limiter PMAG AR/M4 GEN M3, 3 Pack, PMAG Ranger Plate AR/M4 GEN M3, 3 Pack, Compliance Notices and Magazine Restrictions, Wide compatibility with most 'STANAG 4179' platforms such as the AR15/M4, FN SCAR, IWI Tavor, and others. Since the case and cartridge dimensions of the 5.56 and the .300 AAC Blackout magazines are almost the same, the .300 AAC is technically compatible with 5.56 magazines. Buyer's Club $107.99 Non-Member $119.99 . AR-15 50 Round 223/556/300 (non subsonic) Drum Magazine - Limited Chevron Pattern Edition. The store will not work correctly in the case when cookies are disabled. .300 Blackout (BLK) vs. 5.56: What's Best For You? Are we proponents of using the right tool for the job whenever possible? The X Products X-15 is an extremely compact and versatile 50 Available translucent or opaque. The Best .300 Blackout Magazines | American Firearms 2023 Magpul Industries Corp. All Rights Reserved. WARNING:Observe safe firearm handling practices at all times. Besides the easy conversion between 5.56 and .300 BLK, the .300 BLK does a lot the 5.56 can't. First off, it's a very versatile load with projectiles weights ranging from 110 grains to 220 grains. A dedicated .300 Blackout magazine gives you a chance to load your BLK in a specific magazine, which can offer a tactile difference or enable you to paint a bright color or use another visual indicator (such as a paint pen on the Magpul Gen M3 or different colored follower) giving you distinct visual and tactile indications as to which magazine is which. Gorilla DEFENSE, 300 Blackout, Gorilla HUNT, 300 Blackout, View Ammo By Caliber, 300 Blackout. Search by Gun Style. Available in 10, 20 and 30-round capacities. $65.99, Special Price Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product. PLEASE NOTE:Certain U.S. jurisdictions restrict firearm magazines sales. Variants of this versatile magazine work in 5.56 45/.223 and most 300 AAC Blackout(for more information on .300blk please call us.) The updated internal magazine geometry allows these longer heavier bullets to stack properly, which increases feeding reliability when compared to a . Also, polymer magazines are much more widely available and seem to go on sale more often. Click on the name to head to the product page, read reviews and check prices or skip ahead to the list of magazines. This AR-15 . This process makes the products sleek, lighter, and perfectly balanced. Keeping with the theme of changing things visually, many shooters use windowed Pmags for specific calibers like the .300 Blackout. Sale As a side note, it is also possible to make use of standard 5.56mm magazines, whether metal or polymer, for .300 Blackout. Magpul manufactures a magazine optimized for 300 Blackout rounds, the PMAG 30 AR 300 B Gen M3. 300 Blackout vs 7.62x39: Which is Better? | Bear Creek Arsenal When using 5.56x45mm mags, the potential to chamber and fire a 300 BLK round in a 5.56x45mm rifle with catastrophic results requires diligent ammunition management by the shooter. Hunters tend to stick to heavier, sub-sonic 300 Blk rounds as they hunt for heavier animals. With a larger capacity than previous PMAGs, the PMAG D-60 gives the shooter 60 rounds of ammunition, effectively allowing the same round count as two standard capacity 30-round magazines without requiring a critical reload. O ne cartridge that has taken ahold of the modern sporting rifle industry and appears to have strong staying power is the .300 AAC Blackout round. X Products X-15. With that said, its always a good idea to inspect the feed lips on aluminum mags occasionally to ensure theyre still in shape, especially after considerable use or theyve been dropped. The classic is, of course, the 5.56 NATO/.223 Rem, based on the original designs going back to the 1950s and 60s. 300 Aac Blackout Ammo | 300 Aac Blackout Brass - SurplusAmmo We highly recommend, Lancer L5AWM AR-15 .300 BLK 30 Round Magazine, Magpul PMAG M3 AR-15 300BLK 30 Round Magazine, Hexmag Series 2 AR-15 .223/5.56 Magazine (6 Pack), Daniel Defense DD AR-15 .223/5.56 32 Round Magazine, Hexmag Series 2 AR-15 .223/5.56 30 Round Magazine, 10 Pack Magpul Pmag M3 AR-15 300BLK 30 RD Mag, Hexmag Series 2 AR-15 .223/5.56 10/30 10 Round Magazine, CPD Duramag SS AR-15 .223/5.56/.300BLK 20 Round Magazine, Lancer L5AWM AR-15 .300BLK 20 Round Magazine, Magpul PMAG 20 AR .300BLK GEN M3 20 Round Magazine, Daniel Defense DD AR-15 .223/5.56 10/32 10 Round Magazine, Ruger Mini-14 300 AAC Blackout 20 Round Magazine. $9.99, $10.99 Magpul PMAG 30 Gen M3 300 Blackout AR-15 Magazine - 30 Round - Primary Arms If you are looking for a perfect drum magazine that can shoot .223, 5.56, and .300 AAC blackout, look no further. While this would be a minor inconvenience at the range, it could well be the difference between staying in the fight and a catastrophic failure if you grab the wrong black polymer magazine in the awful event of a home defense scenario. SGM Tactical VEPR 12 Drum Magazine, 12 Gauge, 25 Rounds. 5.0. Your Price: $19.57. Pmag 30 Ar 300 B Gen M3, 300 Blk - Magpul These controls take the form of export regulations and license requirements. $19.99, Sale Designed, tooled, manufactured, and assembled in the USA. Well in our case as civilians, why not use it for home defense too? SureFire earplugs 26dB Noise Reduction Rating (0) Add to cart. In addition, this feature may or may not work for weapons with bolt hold-open levers that don't adhere to the Colt-spec. These will get the job done and feed generally well but will do so at the cost of reduced capacity, usually, 30 .300 blackout rounds instead of 30 5.56mm rounds. It has a durable polymer construction that makes it tough and resilient, perfect for extended use. (See Magpul. $15.99, Special Price Impact resistant polymer body. The store will not work correctly in the case when cookies are disabled. Theyre made out of high-quality, black anodized aluminum for years of service and a solid lock into any AR mag well. However, the heavier Blackout retains more of that energy downrange, having over 130 ft./lbs. .300 Blackout Magazines | The Mag Shack No chance of splinters. 10.5" 300 AAC Blackout Build Kit - DrumMagazines.com Do 300 blackout rounds fit in all standard AR 5.56 magazines - Quora These simple touches make you less likely to misidentify the magazine, making these more than worth looking into. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Additionally, some of our favorite manufacturers have crafted dedicated .300 BLK magazines. $31.99 On Sale: $20.17 Out of Stock. F5 MFG presents one of its finest and robust drum mags, the skeletonized 50 round drum magazine for your AR 15. Add to cart. Pistol length gas tube. (See Magpul Compliance Notices page for more information). Daniel Defense DD Magazine for AR-15 | Daniel Defense Two AR-15 magazines with the black mag showing off a .300 AAC Blackout and the yellow mag housing a .223 Remington. $699$7.99. $90.75, Sale True, .300 AAC Blackout works well enough in AR-15 magazines, but using the purpose-designed PMAG ensures reliability and is the safest way to feed your rifle. Buy this for your AR15 or M16 and turn your weapon into a non-stop mean machine. Aolamegs 300 AAC BLK/7.62x35 mm, 300 Blackout Magazine Bands,Silicone Magazine Marking Bands for Identify Quickly. X-15 Skeleton 50 Round Drum is engineered around our proven coil magazine technology which allows side by side staging of ammunition in a single stack. At a Glance: Our Top Picks for 300 Blackout Magazines. 10 PACK Magpul PMAG GEN M3 AR-15 .223 / 5.56 30-Round Magazine (962) $124.99. $11.99, Sale The .300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. They actually came out with a PMAG specifically designed for 300 Blackout before Lancer introduced the option above. and certify that I will comply with applicable federal, state and local laws and regulations. 300 Blackout 300 Win Mag 30-06 Springfield 30-30 Winchester.308 Winchester 338 Lapua Magnum 5.56x45mm NATO 5.7x28mm 6mm Creedmoor 6.5 Creedmoor 6.5 Grendel 7.62x51mm NATO . To avoid disappointment or steering you in the wrong direction, we bolster our own experience with conversations with experts, comb through reviews on retailer sites & sales data, review industry publications, other blogs, and otherwise surface the best information available. Downrange Comparison. . From left to right: 30 Cal Carbine, 300BLK 5.56 NATO, and 7.62x51 cartridges. In addition to avoiding making a mistake and putting the wrong bullets in the wrong firearm, I like the idea of a company spending a little more time and effort ensuring that our magazines will be reliable over time. Below is my list of the best .300 BLK magazines for 2022. A2 flash hider10.5. Sporting Arms and Ammunition Manufacturers Institute, Inc.. A list of states and municipalities restricting firearm magazine sales is availablehere. This is because heavier bullets like the subsonic . The .300 Blackout has become one of the most popular chamberings for the AR-15 platform in recent years. Lancer .300 BLK AR-15 Advanced Warfighter Magazines - Smoke Anyone who says youll negatively impact magazine capacity when loading .300BLK in a 5.56 stick has never actually tried to do it. I have, on multiple occasions and with various mag brands using windowed magazines and plain jane sticks, successfully loaded a 5.56 magazine to capacity with .300BLK rounds. 300 Blackout | Palmetto State Armory Stryker: 300 Aac Blackout M62 Tracer 142 Gr Fmj - 50 Ct Variants of this versatile magazine work in 5.5645/.223 and most 300 AAC Blackout*. Rating: 80%. The Lancer Systems L5 AWM Advanced Warfighter 300BLK magazine has been specifically engineered for use with heavy subsonic .300 Blackout ammunition, particularly with 200+ grain projectiles. PLEASE NOTE:Certain U.S. jurisdictions restrict firearm magazines sales. Product was successfully added to your shopping cart. . To be notified when back in stock, please enter your email address. Price and other details may vary based on product size and color. They fit ok but they tend to jam in my gun (failure . If you are looking for 300 Blackout specific mags please check back with us, we are trying to replenish our stock. We offer a wide inventory of all of these magazines from a number of different manufacturers. The L5AWM is compatible with many modern weapon systems chambered in .300 Blackout. Born out of a need for a specialized close-combat round for special operations units, the .300 AAC Blackout has become wildly popular for the AR-15 platform - and with good reason.. In short, the baseline Blackout has 60 percent more foot pounds of energy per round at 500 yards than the 5.56 and is akin to the 7.62x39mm M43 round used around the globe by . Side-by-Side Single Stack 50-Round Compact Drum for M16 & AR-15 - RW Arms Search by Manufacturer. **The D-60 is designed to lock the bolt back after the last round for most AR15/M4/HK416 platforms. rates of up to 1100 rounds per minute. American Firearms was established by firearm fans for firearm fans as a modern-day take on all things that go BOOM. Aolamegs 300 AAC BLK/7.62x35 mm, 300 Blackout Magazine Bands,Silicone Magazine Marking Bands for Identify Quickly. The classic is, of course, the 5.56 NATO/.223 Rem, based on the original designs going back to the 1950s and 60s. I list the best choices in terms of value, performance, design, and cost. Highly-demanded product. . AR 15 Magazine - 300 Black Out - Midsouth Laser Engraving The DD Magazine is the only AR-15 magazine worthy of the Daniel Defense name and is built with the same legendary quality and exacting standards as our world-class firearms. New Releases. $24.99, From: Copyright 2023 American Firearms LLC. Sale $37.99. The agile and innovative technologies have helped us manufacture highly durable, functional, and convenient-to-use products at affordable pricing. Best 300 Blackout Magazines of 2022 (Lancer, Magpul, D&H) Copyright 2022 Classic Firearms, LLC. Rated 5.00 out of 5 $ 36.99 Add to cart. For the best experience on our site, be sure to turn on Javascript in your browser. Magpul PMAG D-60 Drum Magazine AR-15 223 Remington, 5.56x45mm 60-Round Polymer Black. You just have to try them out to make sure they will operate consistently. Reliability. All rights reserved. Specification. Caliber: 300 AAC Blackout (also available in 5.56 and 9mm, and all calibers are available as conversion kits) Action: bullpup semi-auto, long stroke gas piston with 2-position adjustable gas block Magazine: uses standard AR-15 (STANAG) magazines. Buyer's . It means any excess metal was removed while during the manufacturing process to ready the mags with bare minimum metal to function properly. Free float handguard (handguard may change depending on availability) please request mlok or keymod in comments section and we will try to accommodate you. Brand: Magpul Magazines. Description: Designed for medium-range target practice, training, and plinking, Stryker 300 AAC Blackout Tracer ammunition is 100% American-made. Quality. As a result, we cannot show you the price in catalog or the product page. Target Sports USA Target Sports USA APEX 300 AAC Blackout Ammo 115 Grain HP Controlled Chaos. The .300 BLK has easily been the most successful new caliber in the last 20 years. Regular Price $39.99 Special Price $16.99. .223/5.56/300 AAC Blackout AR Magazines - Right to Bear You must have JavaScript enabled in your browser to utilize the functionality of this website. JavaScript seems to be disabled in your browser. Gun Review: IWI Tavor X95 in 300 Blackout - The Truth About Guns - Compliance Notices and Magazine Restrictions, Wide compatibility with most 'STANAG 4179' platforms such as the AR15, M4, M16, SCAR MK16/16S, HK416, MR556, M27 IAR, IWI Tavor, and others**. Hexmag Series 2 AR-15 .223/5.56 Magazine (6 Pack) Answer (1 of 10): To answer your question, yes. In addition to the performance gained by a dedicated mag, the PMAG 30 AR 300 B also offers a safer way to feed your 300 BLK rifle. SALE PRICE: $16.99. Gorilla 300 AAC BlackOut Subsonic 220gr Sierra MatchKing - 20 Round Box. Due to the wide variety of projectile weights and profiles potentially decreasing overall reliability, a dedicated 300 BLK magazine was a logical step for the PMAG line. The .300 Blackout allowed users to simply retrofit a .30-caliber barrel to their rifle without making any other changes, as the .300 Blackout uses a .223 case cut down to accept the .30-caliber bullet, meaning the bolt and magazine for a .223 or 5.56 firearm would work for a .300 BLK round. Another way to avoid cross-loading again keeping the feel of the magazine in mind is to change its shape, and this 20-rounder from Magpul has a shorter length than the 30 rounder, making it easy to distinguish. DB9 6 Round Standard Magazine, 9mm $ 15.99 $ 13.59. 4.7 out of 5 star rating (50 reviews) Quick View. PMAG D-60 AR/M4 GEN M3 is available to buy in increments of 1, Be the first to know when this product is available, Smaller capacity,same GEN M3reliability, This site is protected by reCAPTCHA and the Google. Dedicated, purpose-designed magazine for rifles chambered in 300 Blackout. Magpul PMAG 30 Rnd Mag AR 300 B GEN M3 .300 Blackout - MAG800-BLK . 2023, The Mag Shack. $128.20. $129.99, To: $6.99 $ 6. The 300 Blackout AR magazine is a modern adaptation, delivering more power at subsonic levels. We only stock the proven quality when it comes to 300 Blackout and 223 5.56 magazines. 5 Best Magazines for 300 Blackout [2023 Review] - GunPros Fig 1 - .300 Blackout Round in a 5.56 Magazine, D&H Industries 300 Blackout 20 Round Magazine, Voluntary Industry Performance Standards for Pressure and Velocity of Centerfire Rifle Ammunition for the Use of Commercial Manufacturers, The American Firearms Guide to Shotgunning. 300 AAC Blackout 125 Grain FMJ (20)RD SIG Sauer Elite Ball Ammunition (0) Sale. It also makes the ammo visible. The .300 Blackout is one of the more interesting calibers in recent years, officially approved by SAAMI in 2011, and born out of a need for a specialized close-combat round for special operations units, the .300 AAC Blackout has become one of the most popular chamberings for the AR-15 platform and for a good reason.