The Apex Failure Resistant Extractor for Glock pistols is designed with a more robust extractor claw, as well as improved geometry, to produce a more durable extractor that will deliver consistent extraction and a more uniform ejection pattern. The extractor is machined from a billet of stainless steel. Please note that this extractor is not recommended for use with aftermarket slides and/or barrels due to variations in the For use in the following Slim Frame Glock pistols: G43, G43X, G43MOS, G48, G48MOS Mfg: Apex Tactical Specialties Inc