Upper Specs-

-Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hardcoat Anodized finish, T-markings, our logo and M4 feed ramps.

-Barrel is Cold Hammer Forged 4150 Chromoly Vanadium Alloy, M4 barrel extention, Chrome chamber and bore, 5.56mm Nato chamber, 1:7 Twist, Magnetic particle testing on every barrel, Phosphate finish.

-M4 Profile with Carbine length gas system.

-Barrel is Phosphate finished under the F marked A2 front site base. 

-The M16 carriers are Chrome lined with a Mil-Spec phosphate finish.

-Forged Mil-Spec carrier key, Chrome lined, attached with Grade 8 hardware and Properly staked.

-MP tested bolt, Each extractor is fitted with a Mil-Spec black insert and Mil-Spec Viton o-ring.

-M4 hand guards.

-A2 Flash Hider.

-Each upper also comes with an ST-T2 buffer.

**INSTOCK and Shipping**