Increased pressure stabilizes the follower and improves feeding, especially on high-capacity magazines. SIG P220 provides 10% more power in your older .45 ACP Sig P220 and is the factory standard spring in newer P220s with a green recoil spring. Also fits the Browning BDA .45 ACP. Separate models available for magazines with a metal floorplate (MF) or a plastic floorplate (PF). Will not fit 8-round magazines made by Mec-Gar.

SPECS: Will not fit Meg-Gar Sig 220 magazines and 70873 fits Metal Floor plate Sig 220 and BDA magazines only, 79383 fits Plastic Floor plate Sig 220 magazines only.