*Milspec forged aluminum upper receiver with forward assist and dust cover
assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. M4
feed ramps. Forged from 7075 T6 aluminum.
*New and improved M Lok Narrow Profile 15" Extended Rifle Length free
float rail with steel barrel nut and front section rails for adding
accessories. Smooth middle section allows for a more comfortable grip.
If you want to add more rail sections, M Lok rail sections will
fit in the empty elongated slots on the hand guard.
*ER SHAW CUSTOM 18” 6.5 Grendel 416R Stainless Steel Hbar Barrel with 1x8 twist. 5/8x24 Muzzle Threads. ER Shaw barrels are extremely accurate, high performance barrels with a long, exceptional reputation for quality.
*.750 Low Profile Gas Block.
*Midlength Gas Tube.