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US ARMS polymer AR15 lower Patriot I

U.S. Arms Patriot-15® complete AR-15 lower by US ARMS

Regular price $190.00 $124.00 Sale

U.S. Arms Patriot-15 complete polymer AR-15 lower receiver w/ 4.0 lb trigger group, mil-spec aluminum buffer tube, M-4 adjustable stock, A2 pistol grip


LIGHTWEIGHT: 1lb 10.4oz pounds complete.

DURABLE: Industry proven indestructible polymer construction.

WARRANTY: Guaranteed lifetime manufacturer’s warranty.


  • U.S. Arms P-15® (polymer) fire control group with a trigger pull of  4 lbs
  • Oversized Integrated Winter trigger guard
  • Updated GEN II billet design
  • All Mil-Spec lower parts kits are compatible with our Patriot-15® lower receiver
  • All Mil-Spec upper receivers are compatible with our Patriot-15® lower receiver
  • Marked as “multi-cal” for caliber designation
  • Scratch resistant, easy cleaning, and very low maintenance


  • M16A2 styled pistol grip
  • 6 position collapsible M-4 style carbine stock
  • 3.0 oz AR-15 carbine buffer w/ AR-15 carbine buffer spring
  • Mil-Spec aluminum carbine buffer tube w/ U.S. Arms ® engraving
  • Steel end plate and castle nut
  • Steel bolt catch and buffer stop
  • Polymer P-15 ® 4.0-4.5 lb trigger group
  • Polymer selector switch
  • Polymer magazine release
  • Polymer front and rear take down pins