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300 AAC Blackout Ammo icon

300 AAC Blackout Ammo For Sale

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The .300 AAC Blackout was developed to replace the 5.56 NATO during the Global War on Terror. The .30 caliber projectile increased the round's terminal performance while maintaining the same magazines and capacity. Shooting enthusiasts have also discovered the benefits of the 300 BLK, with many buying 300 Blackout ammo in bulk to save some money. Learn More
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  1. Magtech First Defense 300 Blackout Ammo - 1000 Rounds of 123 Grain FMJ Ammunition

    Image of Magtech First Defense 300 Blackout Ammo - 1000 Rounds of 123 Grain FMJ Ammunition
    $674.99
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    28 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2230 FPS
    • 1000 Rounds
    • 67.5¢ per round
    • Made by Magtech

  2. Magtech First Defense 300 Blackout Ammo - 500 Rounds of 123 Grain FMJ Ammunition

    Image of Magtech First Defense 300 Blackout Ammo - 500 Rounds of 123 Grain FMJ Ammunition
    $379.99

    1 Review

    16 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2230 FPS
    Muzzle Energy 1359 ft lbs
    • 500 Rounds
    • 76¢ per round
    • Made by Magtech

  3. Magtech 300 Blackout Ammo - 50 Rounds of 123 Grain FMJ Ammunition

    Image of Magtech 300 Blackout Ammo - 50 Rounds of 123 Grain FMJ Ammunition
    $49.99
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    127 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2230 FPS
    Muzzle Energy 1359 ft lbs
    • 50 Rounds
    • $1 per round
    • Made by Magtech

Overview of 300 AAC Blackout Ammo

Advanced Armament Corporation and Remington Defense developed the .300 AAC Blackout in 2010 for increased terminal performance over the 5.56 NATO while maintaining the same rifle platform and magazine capacity.

It has become a favorite of carbine shooters worldwide.

What are the most popular .300 BLK brands you sell?

You can filter our entire selection using the left sidebar to see which brands we currently have in stock and available using the Manufacturers filter. You can also filter by attributes such as Bullet Type, Bullet Weight, Casing Type, and Primer Type to find what you need.

Best 300 Blackout Ammo for Specific Uses

Use Case Details
Best 300 BLK Ammo For A 7.5" Barrel Best Overall: Barnes Precision Match 125 grain.
Runner-Up: Black Hills 110 grain TTSX.
Best 300 BLK Ammo For Hog Hunting Best Overall: Barnes VOR-TX 110 grain TAC-TX FB.
Runner-Up: Hornady Subsonic 190 grain Sub-X.

You can also check out our in-depth look at 300 Blackout ballistics from all of the popular ammo manufacturers if you're in search of ballistics data for your favorite factory 300 BLK load.


Sam Jacobs
Written by
Sam Jacobs

Customer Reviews

Click To Purchase This 300 Blackout Magtech Ammunition
Magtech First Defense 300 Blackout Ammo - 500 Rounds of 123 Grain FMJ Ammunition
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  • wpro said:

    nice tight group, never any problems, use it in a 20in and 10in barrel, same group patterns in both guns. for the performance of the ammo and never any problems I only use magtech