Grams Engineering 11 Coil Replacement Magazine Spring
This package contains (1) mag spring, 11 coils long, designed to fit a ''Grams Format'' follower. It is a replacement spring for any of the Grams ''Follower Kits''
Springs for Para Ordnance 9mm & 40s&w double stack magazines.
I've used these (and some of the 13 coil's) to rebuild Many Para Ord double stack magazines coupled with these followers from gunpartscorp.com (Magazine Follower, 9mm & .40 S&W, Polymer, Black (Double Stack Models) Manufacturer: Para-Ordnance / Para USA Model: 1911 Single Stack Model SKU #1514270)