The Pearce Grip +2 magazine extension for Glock 20/21/29/40/41 (brand part no. PG-1045+) replaces the floor plate on a factory magazine and adds two rounds of capacity. It is made by Pearce Grips from high-impact polymer for factory Glock M20, M21, M29, M40 and M41 magazines. It works on third, fourth and fifth generation Glock models. Fitting it to a Glock 29 turns a 10 round magazine into a 12 round one.

Key Specifications

• Capacity increases by 2 rounds because the extension replaces the factory floor plate.
• It fits Glock factory M20, M21, M29, M40 and M41 magazines, the high-capacity magazines for those models.
• On a Glock 29 it turns a 10 round magazine into a 12 round magazine.
• On a Glock 30 it fits the 9 round magazine and adds one round, for a total of 10.
• It is for high-capacity magazines only and will not work on the 10 round Model 20 and Model 21 magazines or the 10 round Model 30 magazine.
• It works on third, fourth and fifth generation Glock models, so the same extension serves several generations.
• The material is high-impact polymer, chosen for a part that takes a lot of handling.
• The polymer is rated for temperatures from -20 F to 350 F, a wide operating range.
• Installing it adds about an inch of grip length on the Glock 29 example, which you will feel in the hand.
• Many of the newer magazine springs need a 250 round break-in before the last extra round loads easily.

Frequently Asked Questions

Which Glock magazines does this extension fit? It is made for factory Glock M20, M21, M29, M40 and M41 magazines, and it also fits the 9 round Model 30 magazine, which gains one round. It works on third, fourth and fifth generation Glock models.

Will it work on 10 round magazines? Not on every one. The extension is for high-capacity magazines only. It will not work on the 10 round Model 20 and Model 21 magazines, and it is not for the 10 round Model 30 magazine.

Why is the last round hard to load at first? The maker says a 250 round break-in period is required on many of the newer magazine springs, after which the last extra round loads more easily.

Buy the Pearce Grip +2 Magazine Extension for Glock 20/21/29/40/41

A two-round bump is one of the cheapest capacity gains you can make on a Glock, and it takes only a few minutes to install. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more small Glock parts while you are here.