The Guardian

The Guardian


  • 100% American Made
  • Billet Upper and Lower
  • Staked Gas Block
  • Elftmann Socom rated and combat-tested field adjustable trigger
  • Double Beveled mag well
  • Indexing texture forward of trigger guard and mag-well
  • Recessing around mag release button for full engagement with gloved hand   
  • Extended mag release button
  • Threaded bolt catch pin
  • Captured rear takedown pin detent and spring
  • Stainless detent pins
  • Upper receiver tension screw
  • Anti-walk trigger pins
  • Ambidextrous Safety
  • Ambidextrous charging handle
  • 15-degree ergonomic grip
  • Chamfered takedown pin holes on upper
  • Enhanced bolt carrier group (fewer contact patches, premium bolt)
  • Upgraded H2 buffer
  • Upgraded buffer spring (Spring co)
  • Forward assist
  • Lifetime Guarantee


  • Mid-length gas system
  • VG6 Gamma muzzle brake   
  • Adjustable six-position buffer tube
  • MFT Minimalist adjustable stock
  • 16inch 5.56 Nato 1/7 4150 CrMoV
  • 15inch lightweight hand guard
  • 6.8 lbs overall weight
  •  16inch 1:7 Twist barrel


Not Just another
bolt carrier group.


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Lifetime Warranty

Every Cox Arms USA firearm comes with the best warranty in the whole industry. Our lifetime warranty guarantees that if there is ever a problem with your firearm, we’ll either repair or replace it immediately.
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Made In the USA

Cox Arms USA starts with the best raw materials and only the finest components to complete these top-tier firearms. We build American firearms with the highest quality American parts and accessories; assembled by American patriots who have served this great Nation and understand the importance of a well-built, reliable weapon system. Whether you are in the field or protecting your home, you can count on Cox Arms USA to stand with you and stand by our firearms.
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