This is one of the hardest Barrels to find.. and so many different Builds can be made with this Barrel (Xm177E2, Gau-5, Colt Commando, model 733, etc).
- 12.7 inch
 - .750 Profile
 - 1:7 twist rate,
 - Phosphate Finish
 - Chrome Lined
 - M4 Feed Ramps
 - Carbine Gas
 - Made in USA
 
Full Barrel Assembly - Fully assembled and ready to mount on your upper receiver.
- Choice of "F" or "non-F" FSB
 - Tapper pinned
 - Gas Tube & Pin
 - Barrel Nut
 - No muzzle device