Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 21 42 All Add to cartUpper Receiver AssembliesAR-STONER AR-15 Optics Ready Upper Receiver Assembly 5.56x45mm NATO 16″ Barrel 1 in 7″ Twist | AMMO GATE $303.04 Tax Rated 4.00 out of 5