The Rise Armament AR-15 Anti-Walk Trigger Pins can give an extra level of security when installing your triggers.
Pin diameter is .154”, with a torque spec on the screw of 11 inch-pounds maximum; 8 inch-pounds of torque are recommended.
Note: The external width of AR receivers varies in the trigger/hammer pin area, depending on the manufacturer. If the pins are too long for your receiver, you may shorten the pins a small amount by carefully filing material evenly from both ends of the pins. However, this is not required. Longer pins will not affect the function or performance of the rifle.