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300 Blackout Complete Uppers

Find your dream complete AR-15 300 Blackout upper receiver from Bear Creek Arsenal! 300 Blackout uses the same bolt carrier group (BCG), lower, and magazines as 5.56 NATO and 223 Remington, making it extremely easy to add a new caliber to your arsenal! Shoot a large variety of grain weights with exceptionally well performance with subsonic ammo and suppressors. All our side charging and standard charging 300 blackout uppers are compatible with mil-spec AR-15 lowers and come with a limited lifetime warranty. Pair your 300 Blackout upper with an upgraded Blackout barrel to create an even more unique firearm. Get your 300 Blackout upper from BCA today and experience durability and precision you won’t get anywhere else!

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MILITARY GRADE CONTENT

"Carving out a niche in the competitive firearms industry, BCA offers an attractive blend of quality, variety, affordability, and exceptional customer service. This unique mix has resulted in a robust customer base that respects Bear Creek not only as a firearms manufacturer but as a trustworthy and reliable brand."

 

-Unrivaled Craftsmanship and Affordability: Exploring Bear Creek Arsenal’s Impact on the Firearms Industry

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