Lately I've been thinking that a 14.5 pinned/welded upper on a carbine rifle lower would be about the best all around/ GP carbine. being the owner of a 10.5 pistol and a 16" rifle, I can see how a 14.5 rifle would be kinda the "best of both worlds." the 14.5 upper with lpvo would be a great match. allowing for good up close maneuverability in a vehicle or building , lighter weight for carrying and decent energy downrange. i'd go with a flash hider/ muzzle brake hybrid device on the end. what are your thoughts?