Colt 14.5" SOCOM Profiled, M4 Upper Conversion Kit. Comes complete with BCG, Charging Handle, Centurion Arms CMR-12 Free Float Rail, Pinned (shaved) Gas Block, Muzzle Dust Cover, Manual and Box.
These are factory built uppers!
Uppers have been pinned to make them 16" OAL. These adaptors will work with the Surefire SOCOM II suppressors.