Pearce Grip Extension For Glock Model 42. 380 cal). This extension replaces the magazine floor plate adding approximately 3/4" additional length resulting in better control and comfort without altering the capacity of the factory magazine. This product will not fit the Glock 43. Specifications for Pearce Grip Extension For Glock Model 42: Manufacturer: Pearce Grip Color: Black Fabric/Material: Polymer Gun Make: Glock Gun Model: Glock 42 Package Contents: Pearce Grip Grip Extension For Glock Model 42 The Pearce Grip Grip Extension Glock Model 42 PG-42 is a quality addition to the Pearce Grip lineup. For more great deals on Gun Parts by Pearce Grip please browse our Pearce Grip Gun Parts page. What firearm models does the manufacturer say Pearce Grip Extension For Glock Model 42 is compatible with? The manufacturer suggests that Pearce Grip Extension For Glock Model 42 is compatible with Glock 42Pearce Grip Grip Extension For Glock Model 42