Genuine 14.5” SOCOM, carbine length gas system barrel from Colt. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and ½-28 threads for a muzzle device. All NFA rules apply.
Site towers are not "F" marked
AR-15, Issue:11, Page:019
Big Book Catalog, Issue:68, Page:018
Big Book Catalog, Issue:69, Page:019
Big Book Catalog, Issue:70, Page:017
Big Book Catalog, Issue:71, Page:019
Big Book Catalog, Issue:72, Page:024
Big Book Catalog, Issue:73, Page:027