tactical adjustment aluminium alloy matic selector switch for glock/17/18/19/ sear and slide

the product manual will not be included in the package. the contents of the manual are on the details page. if you have any questions, please contact customer service. thank you. if you need large quantity , please feel to contact us any time,we will be ready to offer our service and price in time 24 hourse service these are the strongest pins that can be produced and were designed to withstand the high impact what you see is what you get showing on the ps special anti-creep retainers prevent wear on your firearm.syi