It's going to be a 1" or less difference in overall length (also factor in buttstock length if you're counting fractions of an inch).1s1k52 wrote:the 14.5 route is just me trying to get as short of a carbine as possible. So unless I just have something backwards or wrong please let me know.
More importantly, a 14.5 bbl and mid-length gas system may be more ammo sensitive with regard to cycling reliably. So if you go the 14.5 route, then make sure it's a carbine-length gas system or use NATO ammo.