This sturdy rear sight tool for Glock handguns is designed to push the rear sight without damaging sight or slide. Designed specifically for factory or aftermarket rear sights with angled sides only. Instructions included. Note that this tool is designed for double stack frames only. For new slimline single stack Glock models, the adapter kit #326194 is required. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.