I have a Kimber , a Marvel Unit 1, and a old Colt. They all work well, but the Kimber kit is the one that gets the most use. The Marvel is the most accurate, then the Kimber, and Colt is the expensive Hangar Queen. The polymer mags I got work well and now hold 15 rds . the Kimber fits 70 and 80 series pistols according to their ads. Used to be a bit cheaper than the $350 tag now. I also have the Kadet 22lr kit for My CZ 75B SA, it is almost as pricey as the Marvel, and shoots just as accurate as the Kimber. Like any other pistol, you have to find what they like in ammo, I got lucky and they both seem to eat the cheep stuff at an acceptable level of plinking accuracy. YMMV..
