The GTUL Glock Magazine Disassembly Tool removes the floorplate of magazines while preventing wear on the locking tabs and damage to the metal liner. The tool helps keep your magazines clean and help prevent loose fitting floorplates. The GTUL will withstand thousands of cycles. Notes: Red (9mm/40) works with 357 Sig and 45 GAP as well. Works on double stack magazines only. 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.