It is marked "M4LE/COLTS LAW ENFORCEMENT" on the left and the "Restricted/Military/Gov/Export use only" mark on the right. I was thinking of modifying it and shooting it. However, I just wanted to do a value check first and have seen some talk that the newer guns "aren't made like they used to be". I can't find any complete 6921's in stock anywhere and really not even any very similar comps on GB (current or completed items). Uppers appear available, but not complete rifles. Are these in any sort of demand now? Shoot this one, or keep it stock/unfired and shoot something that is current production and available?