- Complete Bolt Carrier Group
- 15" M-Lok Handguard
- 20” 416R Stainless Steel Barrel
- M2 Flash Hider
- Chambered in 6.5 Grendel
This powerful AR-Stoner A3 Upper Receiver Assembly in 6.5 Grendel is designed to meet Customer's needs. This AR-Stoner 6.5 Upper Assembly provides function, style and affordability for today’s modern sporting rifle shooter. The A3 upper attaches to virtually any standard AR-15 lower receiver. This 6.5 Grendel upper features a fluted 20" 416R stainless steel, heavy contour barrel with 1:8 twist. It also also features a rifle-length gas system, 5R rifling, stainless steel M2 flash hider, and a lightweight 15” free float M-Lok Handguard. M-Lok Handguard slots allow mounting of popular M-Lok compatible accessories directly to precision cutouts. The handguard also features integrated QD sling mounts with a sleek design while maintaining strength and ergonomics. Finish building the gun of your dreams that has downrange power with this AR-Stoner AR-15 A3 Upper Receiver Assembly in 6.5 Grendel.