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

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 mid-length gas system, a mil-spec bolt carrier group, 20” heavy-profile barrel with a stainless finish and a lightweight 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:

• Chambered in 6.5 Grendel
• 416R Stainless Steel Barrel
• Free Float M-LOK Handguard