So Kel Tec and HiPoint make carbines for 9mm and .40, but not .45 What gives? Mech Tech makes their CCU upper to fit m1911 45's, but that's about it. There are Feather Arms 45 carbines for twice the price or HK/Berettas for four times. HiPoint has been rumored to start making a .45 carbine for a long time now but have been all talk/no cattle. They seem to enjoy a lot of success with their 9's & 40's among law enforcement. Still having trouble figuring out why there are so few carbines for a cartridge like the 45 acp.