*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.

*AR15Part.com 15" M Lok Extended Rifle Length Narrow Profile Free Float Rail. Very comfortable and very light weight. M Lok slots run the entire length of our rail at the 3, 6, and 9 o'clock postions. Picatiny rail sections NOT included but are available for purchase on our website if needed. Rail sections easily attach to our rails for adding accessories like bipods, flash lights, grips, lasers, etc.

*ER SHAW CUSTOM 18” 6.8 SPC (SPEC II) Stainless Steel Barrel with 1x11 twist. 5/8x24 Muzzle Threads. ER Shaw barrels are extremely accurate, high performance barrels with a long, exceptional reputation for quality.

*This upper assembly will fit all standard AR 15 lower receivers