Aero Precision Complete Upper Receiver M4E1-T RM12.7 5.56x45mm NATO 13.9in Government Mid Length 1 in 7 1/2 x 28 12.7in A2 Flash Hider Anodized Black. 9in 5.56x45mm NATO RM12.7 Complete Upper Receiver. Developed using some of the most extremely strong.
Determined at checkout.
