Online Only. Will only hold 300 AAC Blackout rounds. Add to cart. American Firearms was established by firearm fans for firearm fans as a modern-day take on all things that go BOOM. 300 Win Mag Dummy. It has a durable polymer construction that makes it tough and resilient, perfect for extended use. Aolamegs 300 Blackout Magazine Marking Band 6 Pack, 4 pcs 300 Blackout BLK AR15 Lower Graphic - Spartan Style .300 AAC AR Decal | Flag American Sticker | 2020, Ideagle 300 Blackout Magazine Marking Bands, 10 Pack 300 AAC BLK 7.62 X 35 mm, 24 Pack Miaozhun .300 Blackout Magazine Marking Bands 300 BLK Magazine Caliber Identification, 12 Pack Miaozhun .300 Blackout Magazine Marking Bands 300 BLK Magazine Caliber Identification, Aolamegs 300 Blackout Subsonic Magazine Marking Bands 6 Pack. **The D-60 is designed to lock the bolt back after the last round for most AR15/M4/HK416 platforms. Available in 10, 20 and 30-round capacities. Founder & Licensed Concealed Carry Holder. Magpul is the most popular manufacturer of polymer firearm magazines for everything from Glock mags to AR-15 mags. EXPORT NOTICE:This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL).
Stryker: 300 Aac Blackout M62 Tracer 142 Gr Fmj - 50 Ct You do not pay anything extra and your purchase helps support our work. . Copy this link and share it with your friends. -
10. That said, in general, there are two types of magazines in .300 Blackout, metal, and polymer.
.300 Blackout Magazines | The Mag Shack 41 Reviews. Rated 5.00 out of 5 $ 36.99 Add to cart.
300 AAC Blackout Magazines. 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 improvised and revised version of this mag has a better feeding system that delivers durability, reliability, and the fun of shooting without any errors. rates of up to 1100 rounds per minute. It is done in cerakote armor black, Magpul flat dark earth (FDE), and OD green Magpul for better protection, additional wear strength, friction reduction, and a bold look. Due to the side-by-side staging of single
300 aac blackout magazines for sale | eBay Find 300 AAC Blackout/Whisper (7.62X35mm) Ammo for sale, in-stock and ready to ship at Ammo Freedom. Buyer's .
300 Blackout Ammo | Bulk 300 AAC Blackout/Whisper (7.62X35mm Magpul PMAG M3 300 B Magazine AR-15 300 Blackout Polymer - MidwayUSA Zero Credit Fees & Free Shipping on all items, By adding any item to cart, I understand and agree to the. Retailer Updated; HERA USA H2 AR-15 Magazine 5.56 NATO 20 Rounds Polymer Construction OD Green Finish: 20 rnd $ 9.55: 1: $9.55: CheaperThanDirt. . $129.99, To:
300 Blackout - DrumMagazines.com Brand: Magpul Magazines.
Lancer .300 BLK AR-15 Advanced Warfighter Magazines - Smoke 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 . Well in our case as civilians, why not use it for home defense too? Description Brand Capacity Price Count PPM. Buy this for your AR15 or M16 and turn your weapon into a non-stop mean machine.
5 Best Magazines for 300 Blackout [2023 Review] - GunPros The .300 Blackout is a necked-down version of .223/5.56mm. When it comes to performance downrange, the 7.62x39 Vs. .300 Blackout differences show, despite the fact both cartridges are .30-caliber.308-inch. DB380 6 Round Magazine with Finger Extension, .380 $ 15.99 $ 13.59. Add to cart. Reliability. Sale! Its purpose is to achieve ballistics similar to the 7.6239mm Soviet cartridge in an AR-15 platform while using standard AR-15 magazines at their normal .
Shop Magpul PMAG Magazines | Palmetto State Armory Feed lips are the last mile of the magazine theyre where the round is handed off to the bolt carrier in the chamber, which is a volatile environment. 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. Magpul Industries cannot process sales/shipments prohibited by law. Rating: 100% . PARTS AND ACCESSORIES (Barrel Nuts, etc. Products are selected by our editors.
Can .300 AAC Blackout cartridges be loaded into 5.5645mm NATO drum Why Your .300 BLK Won't Work - The Armory Life A list of states and municipalities restricting firearm magazine sales is availablehere. This is because heavier bullets like the subsonic . Click on the name to head to the product page, read reviews and check prices or skip ahead to the list of magazines. When considering dedicated .300 Blackout magazines, you have options.You can keep using your 5.56mm magazines, but identifying .300 BLK from 5.56 will be difficult without a means of avoiding cross-loading and the damage that can do to yourself or your firearms. Description: Designed for medium-range target practice, training, and plinking, Stryker 300 AAC Blackout Tracer ammunition is 100% American-made. Designed to fit the AR-15 rifle. $169.99, Sale
The PMAG 30 AR 300 Bs distinct rib design and smoother upper-half texture provides the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues. $101.00, Special Price
Right in the same budget ballpark as the Pmag, these Hexmags have a hexagonal texture on the whole magazine, a red follower, and a matching red button on the bottom to view the floor plate. $65.99, Special Price
Hunters tend to stick to heavier, sub-sonic 300 Blk rounds as they hunt for heavier animals. Ruger Mini-14 Magazine .300 AAC Blackout 20 Rounds Laser Engraved Metal Dark Fin. Along with optimized 300 Blackout performance, the PMAG 30 AR 300 B incorporates all of the GEN M3 features such as our next-generation impact and crush resistant polymer, aggressive front and rear texture, an easily removable slim floor plate, a paint pen dot matrix for marking and identification, and a dust/impact cover. Blackout calibers. It means any excess metal was removed while during the manufacturing process to ready the mags with bare minimum metal to function properly.
.300 BLACKOUT | Wilson Combat 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. Dedicated, purpose-designed magazine for rifles chambered in 300 Blackout. Highly-demanded product. $13.99. 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.
Surefire Mag AR-15 223 Remington 5.56x45mm 300 AAC Blackout 60-Round SALE PRICE: $16.99. MAGPUL PMags are an industry leader when it comes to AR-15 magazines. $128.20. Sale! Gorilla 300 AAC BlackOut Subsonic 220gr Sierra MatchKing - 20 Round Box. Your Price: $19.57. 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. Sale. Some of the most popular magazines for the AR are the 5.56 NATO/.223 Rem and the .300 Blackout. Gorilla DEFENSE, 300 Blackout, Gorilla HUNT, 300 Blackout, View Ammo By Caliber, 300 Blackout. EXPORT NOTICE: This is an item controlled for export by the International Traffic in Arms Regulations (ITAR). However, at 700 meters, 300 AAC Blackout gains the same muzzle energy that 5,56 develops at 500 meters, which is a very good result for long-distance shooting. $699$7.99. It is the original design of F5 and is machined out of billet 6061 aluminum for unmatched functionality and rigidity. 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 . Ruger SR-556 6.8mm SPC 5-Round Magazine. Price and other details may vary based on product size and color. (See Magpul Compliance Notices page for more information). Feed Lips. $29.99. 300 AAC Blackout ammo, SAAMI short name 300 BLK, also known as 7.6235mm is a rifle cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. KCI AR-15 Drum Magazine, .223 Rem./5.56 NATO, 50 Rounds.
Do 300 blackout rounds fit in all standard AR 5.56 magazines - Quora 4.6 (17) Magpul PMAG 5 7.62 AC AICS Short Action 7.62 x 51mm NATO Magazine. While running a standard magazine is convenient (one of the central features of the .300 BLK is you dont have to change anything on your 5.56 AR beyond the barrel), theres additional safety in dedicated magazines, which help mitigate dangerous cross-loading issues (chambering and firing the wrong ammo, causing a catastrophic out of battery detonation). This drum mag is made in the US with the most groundbreaking innovation using the latest 5-Axis machining technology.
300 AAC Blackout Ammo | Target Sports USA - Ammo Deals 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. OUR TOP PICK: D&H AR-15 300 AAC Blackout 20 Round Magazine. Load up to 30 rounds quickly and easily with this loader. AAC 300 Blackout Ammo 125 Grain FMJ w/ JAG Head Stamp, 300rds . The store will not work correctly in the case when cookies are disabled. Ships with a 30-round Gen3 windowed Magpul PMAG 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. We use cookies to improve your website experience. Gunmag Premium Vintage Tri-Blend Logo T-Shirt, Bulgarian AK-47 7.62x39mm 40-Round Clear Polymer Magazine, Bulgarian AK-47 7.62x39mm 30-Round Steel Magazine, ETS Sig Sauer P320, P250 9mm 40-Round Extended Magazine, Night Fision Optics Ready Stealth Night Sight Set for HK VP9, Crucial Concealment Covert Right-Handed OWB Holster for Glock 43/43X Pistols, Duramag AR-15 .223 / 5.56 10-Round Stainless Steel Magazine with Black Follower. 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. . Magpul PMAG M3 AR-15 300BLK 30 Round Magazine. 338 Win Mag Dummy. 7 Reviews. The store will not work correctly in the case when cookies are disabled. If you've ever wondered which is better 556 or 300 Blackout, you came to the right place. 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! 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.
To keep things as safe as possible, we recommend dedicated 300 Blackout magazines and magazines that offer unique color, distinct follower, or identifiers to ensure its clear which magazine houses 5.56 and which contains .300 BLK. The store will not work correctly in the case when cookies are disabled. 2023 GunMag Warehouse. .300 AAC Blackout ammo is an excellent close range performer and one of the best calibers to use with a suppressor. 299.99. These Gen M3 PMAGs mitigate cross-loading by adding .300 BLK-specific next-generation features like distinct rib design, rear texturing on the magazine body, and an easily-removable, slim floor plate, and stainless steel spring. 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. Using different mags for each caliber (like Hexmags for .300 BLK and Pmags for 5.56mm) will prevent cross-loading and simplify your range day packing.
L5AWM 300BLK 30 Magazine - Lancer Systems Your high capacity magazines super store. FREE SHIPPING. If you are looking for a perfect drum magazine that can shoot .223, 5.56, and .300 AAC blackout, look no further. Tavor Vs AR-15, both rocking the PMAG. Failure to do so may result in serious bodily injury or death. We aim for all thriller, no filler, as they say. FREE delivery Wed, Mar 8 on $25 of items shipped by Amazon. . Dedicated magazine for rifles chambered in 300 BLK that supports the differing geometries found in that caliber. 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. (See Magpul. Built to hold (30) rounds of ammunition. The 20 rounder offers the same great Pmag features but measures in at a few inches shorter so its smaller in-hand. *Optimized for use only with 5.56x45 NATO/.223 Remington cartridges. 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! The window in this lightweight polymer magazine is also handy for keeping track of remaining ammunition. 14m! Brand: Hexmag Magazines. F5 MFG presents one of its finest and robust drum mags, the skeletonized 50 round drum magazine for your AR 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. Again, the idea is to give yourself as many visual and tactile indicators of the intended caliber on the magazine, and we think these do a very good job at that. $11.99, Sale
Magpul PMAG D-60 Drum Magazine AR-15 223 Remington, 5.56x45mm 60-Round Polymer Black. PSA is your 300 Blackout headquarters for rifles, pistols, kits, ammo, and more. .300 Blackout vs 5.56mm NATO. $9.99, $10.99
BEST BUDGET OPTION: Daniel Defense 5.56mm 32rd Magazine. They fit ok but they tend to jam in my gun (failure . 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.. Dismiss, 50 Round 223/556 Drum Magazine Chevron Pattern, CZ BREN 2 Carbine with 2 x 5.56mm Magazines, CZ Bren 2 Modular Stock System (MSS) & MSS Adapter, AR-15 50 Round 223/5.56 Drum Magazine - Limited Edition, 67mm AR-15 Utility (Can) Launcher With Picatinny Foregrip & 25 Blanks, HK-MP5 Tactical Kit 50 Round Drum, Modular Brace System (MBS), Cyberarm Brace, AR and Glock 50 round 9mm Magazine with Exchangeable Magazine Tower, 67mm AR-15 Utility (Can) Launcher With 37mm (Golf Ball) Launcher Adapter, FFL Requirements When Purchasing A Firearm.
Accessories. 16 reviews. This rib can tip the fatter .300BLK rounds (generally subsonic ammo in the 115-grain territory) toward the center of the magazine, creating misalignment and potential bullet pinching with picky rifles leading to a slower load. PMAGs are my go-to for almost any caliber. Optimized internal geometry accommodates the wide variety of bullet profiles used in 300 Blackout cartridges. The classic is, of course, the 5.56 NATO/.223 Rem, based on the original designs going back to the 1950s and 60s. In addition, this feature may or may not work for weapons with bolt hold-open levers that don't adhere to the Colt-spec. $18.99, Special Price
$18.99, Sale
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.
Ruger Mini-14 Magazine | Cheaper Than Dirt Pmag D-60 Ar/M4 Gen M3 - Magpul 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**. We're proud to offer Military/Veterans, First Responders, and Government Employees special pricing. They use a .300BLK-specific internal geometry and shoulder rib that enables the rounds to stack properly and prevents feeding issues with the shorter, stubbier rounds -giving you a more reliable magazine. ), Magpul PMAG 30 Round AR/M4 GEN M2, 5.56x45 Window Magazine, Magpul PMAG 30 AR/M4 GEN M3 MOE, 5.56x45 Magazine - BLK, Hera USA H3 Gen 2 30 Round AR Magazine 5.56 / .223 Polymer - Tan, Lancer L5AWM 223/5.56 30-rd Magazine - Translucent Smoke, TROY AR Magazine 30 Round .223 Rem/ 5.56 NATO - Black, Lancer L5AWM 223/5.56 30-rd Magazine - Translucent Clear, DURAMAG / C Products SS 5.56/.223/.300BLK 5 Round AR Magazine, PMAG 30 Round AR/M4 GEN M3, 5.56x45 Window Magazine, ProMag 42Rd AR Magazine .223 Rem/ 5.56 NATO - Black, HEXMAG 30Rd AR Magazine Series 2 .223 Rem/ 5.56 NATO - Black, Magpul PMAG (40 Round) AR/M4 GEN M3, 5.56x45 Magazine, LANCER L5AWM 10rd Magazine - Translucent FDE, PMAG 30 AR/M4 GEN M3, 300 Blackout Magazine, PMAG 30 Round AR/M4 GEN M3, 5.56x45 Window Magazine - Medium Coyote Tan Finish, Mission First Extreme Duty Window 30 Round Magazine - SDE, PMAG 20 AR/M4 GEN M3, 5.56x45 Magazine - 20 Round, Hera USA H3 Gen 2 30 Round AR Magazine 5.56 / .223 Polymer - Black, Mission First Extreme Duty Window 30 Round Magazine, PMAG 30 AR/M4 GEN M3, 5.56x45 Magazine - Medium Coyote Tan Finish, Mission First Extreme Duty 30 Round Magazine, Magpul Enhanced Self Leveling Follower Yellow - 3 Pack, DURAMAG / C Products 5.56/.223/.300BLK 30 Round AR Magazine, Magpul Enhanced Self Leveling Follower - 3 Pack, Lancer L5AWM 300 BLK 20-rd Magazine - Opaque Black, Magpul PMAG 30 AR/M4 GEN M2 MOE, 5.56x45 Magazine - BLK, LANCER L5AWM 10rd Magazine - Opaque Black, Ammo Bundle | 2x AR-15 5.56x45 Magazines - BLK + 3x Sellier & Bellot SB556A 5.56x45mm NATO Ammo 55 Grain FMJ Ammo, Titanium Nitride (TiN) Bolt Carrier Group - Chrome + 10x Magpul 30 Round PMAGs, Titanium Nitride (TiN) Bolt Carrier Group - Gold + 10x Magpul 30 Round PMAGs, Ammo Bundle | 2x AR-15 5.56x45 Magazines - BLK + 3x PMC 556X X-Tac 5.56x45mm NATO Ammo 55 Grain FMJ Ammo, Ammo Bundle | 2x AR-15 5.56x45 Magazines - BLK + 3x PMC 223A Bronze .223 Rem Ammo 55 Grain FMJ Ammo, 16" M4 Profile Barrel 5.56 (Carbine) + 10x Magpul 30 Round PMAGs, Polished Black Nitride 5.56 BCG + 10x Magpul 30 Round PMAGs, DURAMAG / C Products 5.56/.223/.300BLK 30 Round AR Magazine - Pink, RTB Complete Lightweight BCG - BLACK NITRIDE with 2 FREE Magpul 30 / 10 rd PMAGs, RTB Complete M16 BCG - PHOSPHATE with 2 FREE Magpul 30 / 10 rd PMAGs, RTB Complete M16 BCG - NICKEL BORON with 2 FREE Magpul 30 / 10 rd PMAGs, RTB Complete M16 BCG - BLACK NITRIDE with 2 FREE Magpul 30 / 10 rd PMAGs, Mission First Standard Capacity Polymer Magazine - 30 Rd, DURAMAG / C Products SS 5.56/.223/.300BLK 20 Round AR Magazine, Bushmaster Magazine, Black Aluminum, Orange Follower - 30 Rd, Strike Industries AR-15 .223/5.56 Magazine 10 Rounds - Black, DURAMAG / C Products SS 5.56/.223/.300BLK 10 Round AR Magazine, Magpul D60 PMAG 5.56 Drum Magazine - 60 Round, Magpul Industries PMAG AR-15 GEN M3 .223/5.56 Magazine 10 Rounds - Black, LANCER L5AWM 10rd Magazine - Translucent Smoke. Gorilla Ammunition .300 BlackOut 115gr, Controlled Chaos, Pig Punisher - 20 Round Box. . FREE delivery Thu, Mar 9 on $25 of items shipped by Amazon +4 colors/patterns. Therein lies the potential for misuse.
Magazines - Diamondback Firearms Typically ships within 1 to 2 business days. Both calibers have approximately the same recoil with most of the recoil energy being directed to the shoulder. $19.99, Special Price
The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout (300 BLK). 32 ACP / Automatic Dummy. $179.85 $0.59. Quantity. No chance of splinters. Features an easy-to-use loading lever, paint pen dot matrix for easy marking, and a rear window for instant capacity indication. 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. Sign up to receive promotional emails roughly once a month. . $12.99, Special Price
Buyer's Club $17.99 Non-Member $19.99 . 2023 Magpul Industries Corp. All Rights Reserved. AR-15 Speed Loader 5.56/.223 300 Blackout. . Ruger Mini-14 Magazine .300 AAC Blackout 20 Rounds. .
So the Blackout would easily retrofit a .30 caliber barrel without needing other changes. Ruger 90526 OEM Black Detachable 30rd for 300 Blackout Ruger AR-556, SR-556 Takedown, Magpul MAG1182-BLK PMAG GEN M3 Black Detachable 20rd 300 Blackout for AR-15, Lancer 428001 L5AWM Smoke Detachable 30rd 300 Blackout for AR-15, Ruger 90484 OEM Black Detachable 20rd for 300 Blackout Ruger Mini-14, ProMag AA13610 Arch Mag 223/204/300BO FOR AA Stocks, CZ 13014 CZ 527 300 AAC Blackout 5rd Black Finish, Magpul MAG800-BLK PMAG GEN M3 Black Detachable 30rd 300 Blackout for AR-15, C Products Defense Inc 3023008175CPD CPD Duramag Speed 30rd Fits AR-15 .223 Cal/5.56/300Blk OD Green Aluminum, C Products Defense Inc 2023002178CPD CPD Duramag Speed 20rd Fits AR-15 .223 Cal/5.56/300Blk Gray Stainless Steel, C Products Defense Inc 2023009175CPD CPD Duramag Speed 20rd Fits AR-15 .223 Cal/5.56/300Blk Bronze Aluminum, C Products Defense Inc 2023008175CPD CPD Duramag Speed 20rd Fits AR-15 .223 Cal/5.56/300Blk OD Green Aluminum, C Products Defense Inc 2023007175CPD CPD Duramag Speed 20rd Fits AR-15 .223 Cal/5.56/300Blk Bronze Aluminum, C Products Defense Inc 2023005175CPD CPD Duramag Speed 20rd Fits AR-15 .223 Cal/5.56/300Blk Blue Stainless Steel. LANCER L5AWM 10rd Magazine - Translucent Smoke. Anyone who says youll negatively impact magazine capacity when loading .300BLK in a 5.56 stick has never actually tried to do it. 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. The PMAG 30 AR 300 B's distinct . The 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. Answer (1 of 4): In theory.
357 Magnum Dummy. 300 blackout Full auto nitride bolt carrier group. PMAG 30 AR 300 B GEN M3, 300 BLK is available to buy in increments of 1, Be the first to know when this product is available, Large DAKA forsuppressors and accessories, This site is protected by reCAPTCHA and the Google. 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. However, the heavier Blackout retains more of that energy downrange, having over 130 ft./lbs. Designed, tooled, manufactured, and assembled in the USA.
Best .300 Blackout Magazines - Sniper Country Top of magazine catch is steel.
What You Need to Know About .300 AAC Blackout Marks engraved in loader for 10, 20, 28, 30 rounds. Since its inception, 300 BLK shooters have had to use a magazine designed for another cartridge, limiting its ultimate performance and compatibility. 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.