AR15- 16 inch FULLY QPQ AND NITRIDE finished
5.56 NATO barrel shoots both 5.56 and .223 rounds
- m4 contour
m4 feed ramps
carbine gas length
uses a .750 gas block ( not included)
Labeling on barrel may not be the same as shown in picture- it will always state caliber and twist rate. , barrel is fully QpQ finished / a dark rich black finish
