The Lone Wolf Distributors Guide Rod Assembly  is a complete drop in unit. Special features include a solid one piece stainless steel guide rod precision CNC machined to accept a removable 3/32 Allen head tip. The ISMI recoil spring is manufactured of certified materials then heat treated for longer life, shot peened for stress relief and finally calibrated to Glock factory specifications (17lbs). These combined features make the Lone Wolf Guide Rod Assembly the most durable, longest lasting system available today.

This model fits all G20,21,21SF pistols.  Experienced shooters realize plastic guide rods can chip, crack or break resulting in feeding or ejection failures and guide rod flex is a major contributor to accuracy problems. The Lone Wolf Guide Rod Assembly addresses all of these issues and will provide you a life time of reliable service.