This extension replaces the magazine floor plate adding two rounds capacity to Glock factory M20 45ACP and M21 10mm magazines. This unit is for use on high capacity M20 and M21 magazines only, it will not work on the 10 round magazines. Not for use on Glock M30 magazines.
Key Benefits
- These units alter the capacity of M20 and M21 high capacity magazines
- These units will work on Full Metal and Non Full Metal lined magazines
- They are made from High Impact Polymer and withstand drop tests at temperatures from -20 F to 350 F.