Brownells 75th Anniversary - A Shooting Heritage

Affordable Practice/Plinker Price - Good Enough for Duty/Competition Use

Magtech First Defense .300 AAC Blackout 123-grain FMJ ammo offers the performance of a premium load at the price of practice ammo. Magtech manufactures this clean-shooting, brass-cased .300 AAC Blackout 123-grain FMJ ammunition entirely in-house with high-grade, rigidly quality-controlled components.

  • Supersonic (2,230 fps), good for tactical, competition and Hunting
  • Primer & bullet are sealed to keep out moisture during long-term storage
  • Excellent shot-to-shot consistency
  • Reloadable Boxer-primed brass cases

Magtech’s First Defense .300 AAC Blackout supersonic ammo is loaded with a 123-grain FMJ bullet for optimal performance in 300 BLK rifles, including SBRs.

You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition. All ammunition must be shipped Domestic Ground. Shipping not available for International residents. Residents in CA, DC, IL, MA, NY, CT, and NJ may have additional restrictions. Always make sure you use the correct ammunition for your firearms. Check your state and local laws for any other applicable firearms and ammunition regulations. Due to Department of Transportation regulations, we cannot accept returns on ammo. Please check local laws before ordering. View full restrictions here.

Ammunition pricing is per box.

ATTENTION – California Customers
Brownells is still shipping ammunition orders to California but the process has changed to comply with California Proposition 63. We must now ship ammunition purchased online to an FFL or California-approved ammunition dealer. After placing your order, a Brownells representative will contact you to ensure your ammunition arrives quickly and in compliance with the law.


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