The .300 Blackout rifle cartridge is also known as 300 AAC Blackout, 300 BLK, and 7.62x35mm. Its design comes from the idea to develop a cartridge more powerful than AR-15’s native 223/5.56, with ballistics similar to those of the 7.62x39mm. This new cartridge had to work reliably with both supersonic and subsonic ammo, in the barrel that is less than 16 inches long. When fired through a suppressor, .300 Blackout bullets give a silent, yet powerful rifle. This ammo can be used for hunting, target shooting, as well as for home defense. Learn more about 300 BLK

Product Per round Price Status/Qty Last change Last update Store
STRYKER: 300 AAC BLACKOUT M62 TRACER 142 GR FMJ - 200 CT $0.62/rd $124.00 In Stock 8d ago 38m ago The American Marksman
STRYKER: 300 AAC BLACKOUT M62 TRACER 142 GR FMJ - 50 CT $0.63/rd $31.50 In Stock 8d ago 38m ago The American Marksman
STRYKER: 300 AAC BLACKOUT 150 GR FMJ - 200 CT $0.67/rd $134.00 In Stock 7d ago 38m ago The American Marksman
Wolf 300 AAC Blackout - 145gr FMJ - Non-corrosive - 20 rounds - COVERED BY OUR NO BS MONEY BACK GUARANTEE $0.68/rd $13.60 In Stock 19d ago 23m ago AmmoGuy.net
STRYKER: 300 AAC BLACKOUT 150 GR FMJ - 50 CT $0.68/rd $34.00 In Stock 8d ago 38m ago The American Marksman
STRYKER: 300 AAC BLACKOUT 147 GR FMJ - 50 CT $0.68/rd $34.00 In Stock 8d ago 38m ago The American Marksman
Wolf 300 AAC BLACKOUT - 100 RDS - 145 gr - STEEL CASE - FMJ-COVERED BY OUR NO BS MONEY BACK GUARANTEE 645611308673 $0.68/rd $68.00 In Stock 19d ago 23m ago AmmoGuy.net
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo Case (500 rds) $0.68/rd $339.99 In Stock 28d ago 1m ago The Armory
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo Case (1000 rds) $0.68/rd $679.99 In Stock 28d ago 1m ago The Armory
Barnaul – 300 Blackout – 145 Grain – FMJ – Steel Polycoated Case – 500 Rounds $0.68/rd $342.00 In Stock 9d ago 10m ago True Shot Gun Club
Barnaul – 300 Blackout – 145 Grain – FMJ – Steel Polycoated Case – 20 Rounds $0.68/rd $13.70 In Stock 9d ago 10m ago True Shot Gun Club
STRYKER: 300 AAC BLACKOUT M62 OHF TRACER 146 GR FMJ - 50 CT $0.70/rd $35.00 In Stock 28d ago 38m ago The American Marksman
BARNAUL AMMO 300 AAC Blackout Steel Case 145Gr FMJ - 500rd 14607094863714 $0.70/rd $349.99 In Stock 6h ago 2h ago KYGUNCO
500 Round Case - 300 AAC Blackout 145 Grain FMJ Steel Case Wolf Ammo by Barnaul $0.72/rd $357.25 9 16d ago 24m ago SGAmmo
500 Round Case of Wolf 300 AAC Blackout 145 Grain FMJ Steel Case Ammo by Barnaul - Free Shipping- 500 rounds $0.72/rd $358.00 In Stock 15d ago 5m ago Ammo Empire
300 AAC Blackout - 145 gr FMJ - Wolf Polyformance- 500 Rounds $0.72/rd $359.00 In Stock 8d ago 21m ago Bulk Munitions
Wolf Polyformance 300 Blackout Ammo 145 Grain FMJ Steel Case Box of 20 - steel case 645611308673 $0.72/rd $14.40 In Stock 21d ago 23m ago Target Sports USA
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Black Python Backpack (500 rds) $0.72/rd $359.99 In Stock 35d ago 1m ago The Armory
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Black Backpack (500 rds) $0.72/rd $359.99 In Stock 35d ago 1m ago The Armory
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Tan Backpack (500 rds) $0.72/rd $359.99 In Stock 35d ago 1m ago The Armory
Wolf Polyformance 300 Blackout Ammo 145 Grain FMJ Steel Case Case of 500 (25 Boxes of 20) - Free Shipping - steel case 645611308673 $0.72/rd $360.00 In Stock 21d ago 23m ago Target Sports USA
500 Round Can - 300 AAC Blackout 145 Grain FMJ Steel Case Wolf Ammo by Barnaul Packed in Used Military M2A1 or M2A2 Canister $0.74/rd $369.75 11 16d ago 24m ago SGAmmo
Wolf - Full Metal Jacket - 145 Grain 300 AAC Blackout Ammo - 500 Rounds 645611308680 $0.74/rd $369.99 In Stock 20h ago 56m ago CheapAmmo.com
Wolf Polyformance 300 Blackout 145 Grain Full Metal Jacket 500 Rounds $0.74/rd $369.99 In Stock 77d ago 55m ago Smoky Mountain Knife Works
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo Box (20 rds) $0.74/rd $14.89 In Stock 42d ago 1m ago The Armory
Barnaul 300 AAC Blackout BARN300BLKFMJ145 145 Grain Full Metal Jacket 20 Rounds - Free Shipping with Buyer's Club! $0.75/rd $14.99 In Stock 10d ago 17m ago Outdoor Limited
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo Brick (200 rds) $0.75/rd $149.99 In Stock 91d ago 1m ago The Armory
300 AAC Blackout - 145 Grain FMJ - Wolf (Steel Case) - 500 Rounds 645611308680 $0.75/rd $375.00 82 21h ago 3m ago Lucky Gunner
BARNES TAC-TX 300 Blackout .308 Dia 110Gr Flat Base 50/Box Rifle Bullets (30321) $0.78/rd $38.76 In Stock 25d ago 29m ago Gritr Sports
200 Round Plastic Can of Wolf 300 AAC Blackout 145 Grain FMJ Steel Case Ammo by Barnaul - Free Shipping- 200 rounds $0.78/rd $155.00 In Stock 15d ago 5m ago Ammo Empire
20 Round Box - 300 AAC Blackout 145 Grain FMJ Steel Case Wolf Ammo by Barnaul $0.80/rd $15.95 61 16d ago 24m ago SGAmmo
Fiocchi 300 Blackout 150g FMJ/50 $0.80/rd $39.99 In Stock 20h ago 27m ago Military Shooters
Armscor .300 AAC Blackout 147GR FMJ NEW Brass - 250rd Pack $0.82/rd $204.99 In Stock 3h ago 28m ago 2A Warehouse
WOLF Polyformance 300 Blackout 145gr FMJ 500rd Steel Case Rifle Ammo (300BLKFMJ1-CASE) $0.84/rd $419.00 In Stock 27d ago 29m ago Gritr Sports
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Black Range Bag (200 rds) $0.85/rd $169.99 In Stock 71d ago 1m ago The Armory
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Tan Range Bag (200 rds) $0.85/rd $169.99 In Stock 98d ago 1m ago The Armory
300 AAC Blackout 145gr FMJ Wolf Polyformance Ammo in The Armory Black Python Range Bag (200 rds) $0.85/rd $169.99 In Stock 47d ago 1m ago The Armory
Winchester Ammo USA 300 Blackout 147 Grain FMJ 20 Rounds [USA300B147] 020892231030 $0.88/rd $17.50 In Stock 7h ago 27m ago Ammo Freedom
Sellier & Bellot 300 AAC Blackout Ammo 147 Grain Full Metal Jacket Box of 20 - brass case 754908512454 $0.88/rd $17.60 In Stock 1d ago 23m ago Target Sports USA
Sellier & Bellot 300 AAC Blackout Ammo 147 Grain Full Metal Jacket Case of 1000 (50 Boxes of 20) - Free Shipping - brass case 754908512454 $0.88/rd $880.00 In Stock 1d ago 23m ago Target Sports USA
Armscor USA 300 AAC Blackout Ammo 147 Grain Full Metal Jacket Box of 20 $0.89/rd $17.88 In Stock 8d ago 6m ago Shark Coast Tactical
Barnaul Ammo BARNAUL 300AAC BLACKOUT 145GR FMJ 20 rounds 4607094863717 $0.90/rd $17.95 In Stock 6d ago 12m ago DeeseFirearms.com
Sig Sauer Elite Performance 300 Blackout Ammo 125 grain FMJ Case of 500 Rounds Bulk E300B1-20 $0.90/rd $449.00 In Stock 18d ago 54m ago Gunprime
Winchester USA .300 Blackout 147gr. FMJ 20rd Box #USA300B147 $0.90/rd $17.99 In Stock 27d ago 6m ago Locked Loaded
Armscor- 300 Blackout - 147gr- FMJ- 20 Rounds $0.90/rd $18.00 In Stock 23d ago 19m ago Pinnacle Armory
Defender 300 AAC Blackout Ammunition DEF300BLKN 120 Total Full Metal Jacket 50 Rounds - Free Shipping with Buyer's Club! $0.90/rd $44.99 In Stock 66d ago 17m ago Outdoor Limited
Fiocchi Range Dynamics Ammo 300 AAC Blackout 150 Grains FMJBT 50 Rounds 762344711010 $0.90/rd $44.99 In Stock 1d ago 55m ago Smoky Mountain Knife Works
Wolf 300 AAC Blackout Ammo - 500 Rounds of 145 Grain FMJ Ammunition 645611308680 $0.91/rd $454.99 In Stock 103d ago 14s ago Ammo.com
Fiocchi Ammo Range Dynamics 300 Blackout FMJBT 150 Grain 50 Rounds [300BLKC] 762344711010 $0.92/rd $45.99 In Stock 7h ago 27m ago Ammo Freedom
Winchester USA Target 300 AAC Blackout Ammo 147 Grain Box of 20 $0.92/rd $18.49 In Stock 28d ago 6m ago Shark Coast Tactical

300 Blackout Ammo

The .300 AAC Blackout is an intermediate cartridge designed to share ballistics similar to those of the 7.62x39 (AK-47 cartridge). It was developed for use in the M4 carbine and can be fired from a standard 5.56mm AR by only changing out the barrel.

It is also known as:

  • 300 BLK
  • 300 AAC Blackout
  • 7.62x35mm

Advanced Armament Corporation collaborated with Remington Defense to develop a .30 caliber cartridge that would surpass the performance of 5.56mm ammo. This long-contemplated idea of replacing AR-15s native 5.56mm came to life after United States Government launched an international military campaign aka global war on terror after 9/11, and our troops found themselves in unfamiliar geography and unknown situations. The demand for a cartridge that has was more powerful and more silent lead to AAC developing 300 Blackout ammo for special operations forces, using a 5.56mm case cut down to fit a 30- caliber bullet.

When was 300 BLK invented?

Although AR-pattern rifles and carbines had been previously chambered in different 30 calibers, feeding issues were present with each attempt. Many ammunition manufacturers had tried and failed, including Colt Firearms. The solution was found thanks to wildcatters. One of the wildcatted cartridges - .300 Whisper served as a concept to get to the final result, and the one to be submitted to SAAMI. Development began in 2009, with the cartridge approved by SAAMI in 2011.  

What’s the difference between 300 AAC and 5.56 / .223? 

Even though both rifle cartridges are suitable for target shooting, hunting, and home defense, there are a few differences between them.
300 blk bullet is stubbier, thicker, and heavier. 5.56mm NATO requires a longer barrel length, at least 12”. Once you add additional few inches that suppressor takes, it becomes impossible to get a powerful, yet short rifle.
On the other hand, 300 BLK works best in shorter-than-average barrels, which makes it super suitable for suppressed use. 300 blackout works reliably with both supersonic and subsonic ammo, but it shines when using subsonic and a suppressor, giving you a quiet and powerful bullet.
5.56 has a faster velocity and shoots flatter, while 300 penetrates through more material.  

300 BLK overcomes some of the shortcomings of larger calibers while providing the AR 15 with the possibility to shoot a larger round, with only switching the upper receiver.  

.300 AAC Blackout round military use

Netherlands 

The first formal adoption of 300 AAC happened in July 2015, when the Netherlands’ defense material organization bought 195 carbines chambered in this round. These integrally suppressed 300 BLK carbines were purchased for the Dutch Maritime Special Operations Force and modified to for use with ballistic visor helmets. 

United Kingdom 

Ministry of Defense ordered the supply of 300 Blackout ammo on a five-year contract, including the option to extend for an additional five years. The government noted the previous use of this round. 

United States

This round has not yet seen wide use in American Special forces, although SOCOM started using it in 2017, considering offers on how to modify 5.56 to accommodate 300 AAC rounds.   

Popular 300 Blackout Ammo Brands 

  • Remington
  • Fiocchi
  • Hornady
  • Magtech
  • Aguila
  • Sellier & Bellot
  • Barnes 

Which guns use 300 BLK Ammo?

A few popular models, including top-shelf rifles using with both supersonic and subsonic ammo, rifles widely used for home defense, hunting, or target shooting:
  • Daniel Defense DDM4
  • Wilson combat protector
  • IWI-US Tavor X95
  • Springfield Armory Saint
  • SIG MCX VIRTUS PISTOL
  • Ruger Ruger American Ranch Rifle
  • Ruger AR-556
Our selection is in no particular order regarding the best 300 blackout gun. Use this list as your starting point when searching for a weapon that suits you best.
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