The AR-STONER AR-15 Side Charging Upper Receiver Assembly Gen 2 is chambered in .223 Remington Wylde and 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 hard coat anodized.
This complete upper features a mid-length gas system, bolt carrier group, 18” heavy profile barrel with a matte finish and a lightweight 15” free float AR-Stoner M-LOK handguard and a 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.
- Gen 2 Bolt Handle
- Spiral Fluted Barrel
- Chambered in .223 Remington Wylde
- 16″ M4 Contour Barrel
Cartridge 223 Wylde Finish Matte Material Aluminum Extra Features Spiral Flutes Weight 5.25 Pound Barrel Length 18 Inches Twist 1:8 Inches Threads 1/2″-28 Barrel Contour Heavy Sights No Barrel Finish Black Nitride Chrome Lined No Gas Block Diameter 0.75 Inches Gas System Length Mid-Length M4 Feed Ramps Yes Upper Receiver Type Side Charging Gen 2 Barrel Material 416R Stainless Steel Handguard 12″ M-LOK Ultralight Bolt Carrier Assembly Included Yes Muzzle Device Flash Hider Mil-Spec or Commercial Commercial Country of Origin United States of America Compatible WithAR-15