KNS Precision Push Button Take Down Pin for HK Firearms Small .234in Diameter Black. 275) diameter take-down pin has a spring-loaded push button. When the button is depressed the stainless steel keeper detents retract for easy pin removal. The pin is designed to eliminate wear in and around the hole. The steel pin body has a black oxide finish. The button also has a drilled cross hole which allows for the installation of a seal wire to prevent tampering with the guns internals. This enhanced version has an end cap to ease in pin removal and installation and also prevents any debris from entering the internal parts of the pin. Specifications for KNS Precision Push Button Take Down Pin for HK Firearms: Manufacturer: KNS Precision Finish: Black Oxide Color: Black Country of Origin: USA Package Contents: KNS Precision Push Button Take Down Pin for HK Firearms KNS Precision HK-PBTD-SM: Push Button Take Down Pin for HK Firearms Small .234in Diameter Black