B5 Systems SOPMOD stock. This is the government model which does not have the female QD socket. This is the original NSWC Crane designed version as made by LMT and B5 Systems for the SOPMOD program. If you need the extract stock for your M4A1, MK18, or MK12 project, this is the correct one. Black color. Fits mil-spec 1.15” diameter receiver extensions only.
Comes in the government packaging as shown.