*Milspec forged aluminum upper receiver with forward assist and dust cover assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. Forged from 7075 T6 aluminum.

*AR15Part.com Premium 17" 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.

*MATCH GRADE AND AIR GAUGED Wilson Arms 24” 223 Wylde (5.56 and .223 OK)Stainless Steel Bull Barrel with 1x8 twist. Target Crowned. This barrel is the standard 24” varmint bull barrel from Wilson Arms that Rock River uses on their 24” varmint upper. These are supremely accurate, high-end barrels.

*.936 low profile gas block.

*Rifle Gas Tube.

*Standard forward assist.

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