AR-STONER AR-15 Side Charging Upper Receiver Assembly 6.5 Grendel 20" Barrel 15" M-LOK Ultralight Handguard

The AR-STONER AR-15 Side Charging Upper Receiver assembly chambered in 6.5 Grendel delivers precision accuracy at an affordable price. The machined billet aluminum upper receiver is combined with an extruded aluminum free float M-LOK handguard and both are Type III hard coat anodized.This complete upper features a rifle-length gas system, a mil-spec bolt carrier group, 20" heavy-profile barrel with a matte finish and a lightweight 15" free float AR-Stoner M-LOK handguard and a flash hider.Use the precision M-LOK cutouts at the three, six, and nine o'clock positions for mounting MIL-STD 1913 Picatinny rails or other direct-attach M-LOK accessories.Features:Side Charging UpperChambered in 6.5 Grendel20" heavy-profile barrel