Adams arms upper p1 5.56mm 11.5" piston black Other Features: M4 barrel contour, 4150 chrome moly vanadium, muzzle thread 1/2x28, m4 feed ramps, includes bcg carbine length gas system, short stroke piston operated, all nfa rules apply
Specifications:
| Caliber | .223/5.56 Nato |
| Barrel Material | Steel |
| Rate Of Twist | 1:7" |
| Barrel Finish | Matte Black |
| Barrel Length In Inches | 11.50 |
| Dimension | 4.35 X 5.45 X 37.65 |
