13 Round Sig Sauer 220 22LR Conversion Magazine upgrade turns your 10 round magazine into a 13 round magazine.

Color coded recoil springs for easy identification for use in Colt 1911, 1911A1, 1991, Government, MKIV, Gold Cup and 2011 models.

Our Full-length, captured stainless steel guide rod helps prevent spring bind and improves cycling.

Glock recoil springs marked with a different color to help distinguish the weights of each spring for easy identification.

Included in our calibration kit is a Full-length, stainless steel guide rod to help prevent spring bind and improve cycling. But best of all it allows you to quickly swap out various springs weights to fine tune your pistol to the ammo you are feeding it for the best performance. You can keep your factory guide rod assembly intact.

16 Round magazine parts kit for Kimber 1911 22LR Conversion Magazines. These parts kits upgrade the factory 10 round magazine to a 16 round magazine. Five kits included for converting 5 magazines.