Through their extensive research, many of these Cloners have become subject-matter experts in the history and development of the M4 and the SOPMOD program. Known as “Cloners,” these people often spare no expense transforming civilian ARs into exact clones of military Special Operations Peculiar Modification (SOPMOD) equipped rifles and carbines, getting even the smallest details correct. But some of the most detailed information on military rifles can actually be found from within a certain group of civilian gun enthusiasts. M4A1 outfitted with Trijicon VCOG, BCM GUNFIGHTER grip, Ark Defense buttstock, Magpul AFG, offset mini-red dot, and Arredondo extended mag well.Ī lot of open-source information is available from the military on the M4 and its variants-the M4A1, MK18, and MK12 Special Purpose Rifle (SPR)-including pages upon pages of online photos and videos of troops downrange using various rifle and carbine set-ups.
