*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 Premium 15" Extended Rifle Length Narrow Profile KEYMOD Rail. Fit and Finish on our newest line of free float rails is outstanding. 100% US Made. Very comfortable and very light weight. Keymod slots run the entire length of our rail at the 3, 6, and 9 o'clock postions. Keymod rail sections NOT included but are available for purchase on our website if needed. Keymod rail sections easily attach to our rails for adding accessories like bipods, flash lights, grips, lasers, etc

*ER SHAW CUSTOM 20” 204 Ruger 416R Stainless Steel Medium contour Barrel with 1x12 twist and 1/2-28 Muzzle Threads. ER Shaw barrels are extremely accurate, high performance barrels with a long, exceptional reputation for quality.

*.750 Low Profile Gas Block.

*Rifle length Gas Tube.

*A2 Flash Hider with crush washer.

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