Posted 25 January (edited) Wts: used Colt lmg upper with colt full auto carrier and bolt, sling and atn 4x32 scope and mount. No buffer or spring. The bolt and carrier are not part of the open bolt system which came with some of these uppers. Edited 8 February by guntrustlawyer Add photos 1 person likes this San Antonio, Texas, United States Share this post Link to post Share on other sites