I bought a complete 5.56 upper from BCM with this barrel on it and never fired through it. After sitting in my safe for some time, I decided to build a 300blk upper to round out my collection. So I took the barrel off and now have no use for it.
M4 Feed Ramp Barrel Extension
Mid Length Gas System
1/8 Twist Rate
5.56 NATO Match Chambers (USMC SAM-R Chamber)
410 Statinless Steel
Mid Weight Contour Profile
Button Rifled
Hand Lapped Rifling
If you have any questions, please ask.
Price: $250 shipped