This is a custom built pistol upper built in our shop. This is a pistol & SBR use only and all nfa rules apply.
11.5 1/7 twist 5.56 chambered QPQ Nitride 4150 Barrel
Low Profile Gas Block
MI Gen 3 Combat Rail 9.5"
A2 Flash Hider
Mil-Spec upper with M-4 feedramps