- Side Charging Handle Design
- Increased Rear Scope Clearance
- M-Lok Handguard Compatibility
- .300 AAC Blackout (7.62x35mm)
The AR-STONER™ AR-15 Side Charging Upper Receiver assembly chambered in .300 AAC Blackout delivers precision accuracy at an affordable price. The machined billet aluminum upper receiver is combined with an extruded aluminum free float handguard and both are Type III hard coat anodized.
This complete upper features a pistol gas system for use with supersonic or subsonic ammo, a mil-spec bolt carrier group, 16” mid-profile barrel with a melonite finish and a lightweight 15” free float AR-Stoner M-Lok handguard and an A2 flash hider.
Attach your favorite sling to the free float handguard with integrated QD mounts and 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.
Note: 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.