Stag Arms Model 8

Stag Arms gas piston upper.
Action: Semi-auto gas piston
Chamber: 5.56 NATO. The upper will also shoot .223
Twist Rate: 1/9 button rifled
Pivot/Takedown Pin Size: Small pin - .250"
Muzzle Device: Stag Arms Compensator
Barrel: 16", 4140 steel, chrome lined, government profile, manganese phosphate coated
Handguard: Thermoplastic with double heat shields
Upper Receiver: Forged and mil-spec with type 3 hard coat anodizing and a picatinny rail on top
Bolt Carrier: Piston bolt carrier with a manganese phosphate coating
Charging Handle: Standard mil-spec
Front Sight: Diamondhead low profile front flip up sight
Rear Sight: Diamondhead low profile rear flip up sight