Adams arms upper p1 5.56mm 16" 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
Specifications:
| Caliber | .223/5.56 Nato |
| Barrel Material | Steel |
| Rate Of Twist | 1:7" |
| Barrel Finish | Matte Black |
| Barrel Length In Inches | 16.00 |
| Dimension | 4.40 X 14.25 X 38.85 |
