Product Description The Pearce Grip Frame Insert for Glock Sub-Compact Generation 4 and 5 is a precision-engineered accessory designed exclusively for Glock models 26, 27, 33, and 39. This insert installs directly into the bottom rear cavity of the pistol&';s frame using a secure friction-fit retention system, effectively closing off the area to help keep debris, dust, and dirt out of the magazine well. Fully compatible with Glock&';s factory interchangeable backstraps, this practical upgrade maintains the firearm&';s original ergonomics while adding a layer of protection to keep your pistol running smoothly. Product Highlights Designed specifically for Glock Generation 4 and 5 sub-compact frames, fitting models 26, 27, 33, and 39 Installs in the bottom rear cavity of the frame with a reliable friction-fit retention for a secure hold Helps keep debris and contaminants out of the magazine well, promoting reliable firearm function Fully compatible with Glock factory interchangeable backstraps for uncompromised ergonomics Simple, tool-free installation for a quick and hassle-free setup Specs Brand: Pearce MPN: PEAPGG4SC UPC: 605849200064 Compatible Generations: Glock Gen 4 and Gen 5 Compatible Models: Glock 26, 27, 33, 39 Retention Method: Friction fit Installation Location: Bottom rear cavity of the frame Backstrap Compatibility: Compatible with factory interchangeable backstraps Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.