KNS Precision AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins .154 Diameter Black. Specifications for KNS Precision AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins: Manufacturer: KNS Precision Trigger Pin Size: 0.154 in Fabric/Material: Stainless Steel Condition: New Features of KNS Precision AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins The external width of some AR receivers may vary in the trigger/hammer pin area depending on the manufacturer. The pins being slightly too long will not affect the function or performance. Package Contents: KNS Precision AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins KNS Precision KNS-4: AR-15/M16/AR10 Gen ST Non-Rotate Trigger/Hammer Pins .154 Diameter Black