This powerful AR-STONER™ A3 Upper Receiver Assembly in 6.5 Grendel is designed to provide all the function, style and affordability for today’s modern sporting rifle shooter. It features a fluted 20" 416R stainless steel, heavy contour barrel with 1:8 twist. The A3 upper attaches to virtually any standard AR-15 lower receiver. Additional features include a rifle-length gas system, stainless steel M2 flash hider, and a lightweight 15” free float M-Lok Handguard. The handguard features integrated QD sling mounts with a sleek design while maintaining strength and ergonomics. Finish building the gun of your dreams with this AR-STONER™ AR-15 A3 Upper Receiver Assembly in 6.5 Grendel.
- Complete Bolt Carrier Group
- 15" M-Lok Handguard
- 20” 416R Stainless Steel Barrel
- M2 Flash Hider
- Chambered in 6.5 Grendel
- Uses a Type 2 bolt with .136" bolt face depth
- Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.