i was doing some checking out on wilson combats site and i found drop in barrels for almost any full size 1911 and a 4inch barrel to fit my kimber for $200. wilson's site said the 4" only fits kimbers. was thinking of getting one after i can get a holster for it as well. Anyone ever heard of anyone doing this? does it have to go through an FFL? if you havent already you should check out wilson combat's site and dream like i like to sometimes.