This AR-STONER AR-15 Upper Receiver provides style, function, affordability to your AR-15 Pistol. The A3 upper attaches to virtually any standard AR-15 lower receiver. Machined with M4 feed ramps, this upper features an M-Lok handguard. M-Lok Handguard slots allow mounting of popular M-Lok compatible accessories directly to precision cutouts with a sleek design that does not sacrifice strength or ergonomics.

The AR-STONER Pistol Kit also includes a pistol buffer tube assembly. The buffer tube is machined from 6061-T6 aluminum and given a hard coat anodized finish to withstand years of abuse. Included in the Pistol Kit is the AR-STONER Lower Parts Kit which includes everything needed to build a complete lower receiver, except a stripped lower receiver. All parts are made to standard military specifications.

Lower Parts Kit Includes

• Bolt Catch
• Bolt Catch Plunger
• Bolt Catch Roll Pin
• Bolt Catch Spring
• Buffer Retainer
• Buffer Retainer Spring
• Disconnector
• Disconnector Spring
• Hammer
• Hammer Pin
• Hammer Spring
• Magazine Catch
• Magazine Catch Button
• Magazine Catch Spring
• A2 Pistol Grip
• Pistol Grip Lock Washer
• Pistol Grip Screw
• Pivot Pin
• Pivot Pin Detent
• Pivot Pin Detent Spring
• Safety Selector
• Safety Selector Detent
• Safety Selector Detent Spring
• Takedown Pin
• Takedown Pin Detent
• Takedown Pin Detent Spring
• Trigger
• Trigger Guard
• Trigger Guard Roll Pin
• Trigger Pin
• Trigger Spring

Pistol Buffer Tube Assembly Includes

• Pistol Buffer Tube
• Buffer Tube Spring
• Short Recoil Buffer
• Castle Nut
• End Plate