Glock Firing Pin Spacer Sleeve Black. The black firing pin spacer sleeve provides a simple and quick way to determine if a locking pin is slipping or requires adjustment. It is made of a high-quality spacer that is built to exacting standards using high-quality materials. It is easy to fit and does not add unnecessary weight to the pistol. The Firing Pin Spacer Sleeve is an essential tool for those wanting to maintain their pistols at optimum condition. It is also great for lubricating the moving locking parts. Specifications for Glock Firing Pin Spacer Sleeve: Manufacturer: Glock Color: Black Quantity: 1 Package Contents: Glock Firing Pin Spacer Sleeve Glock GLSP00056: Firing Pin Spacer Sleeve Black