The Taylor Freelance +0 magazine base pad is constructed of solid brass and does not increase the capacity of the magazine. The floor plate is extended, improving reloads, and working like a magazine extension in the compact and sub-compact models. The added weight of the brass helps to reduce recoil by adding non-reciprocating mass to the pistol and helps empty magazines drop free. 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.