High Plains ArmamentCustom High Quality Firearm Replacement Parts Free Shipping No one likes expensive shipping! We provide tracking numbers when your product ships. Secure Payments Our priority is your payment security. Featured Products Colt Upper Groups Colt AR-15A4 20″ Rifle Upper $899.00 Add to cart Colt Upper Groups Colt FBI HRT 11.5″ Heavy Upper $999.00 Add to cart Colt Upper Groups Colt MK18 MOD0 CQB-R 10.3″ Upper $999.00 Add to cart Colt Upper Groups Colt 14.5″ M4A1 SOCOM Upper $999.00 Add to cart