Strike Industries AR Trigger Hammer Jig Black One Size. The AR15 Trigger Jig allows you to clearly see the sear hammer and disconnector engagement points while under normal spring tension. Specifications for Strike Industries AR Trigger Hammer Jig: Manufacturer: Strike Industries Condition: New Gun Make: AR Platform Color: Black Features of Strike Industries AR Trigger Hammer Jig Clear visibility to see all the moving parts of the trigger while in motion Enables you to practice installing the trigger without taking a chance at scratching your rifle Allows you to demonstrate how the trigger works Able to dry fire the trigger without damaging the jig or other internal parts to check for functionality Allows you to mount the jig in a vise and adjust for trigger pull without having the rifle present Hammer bumper You can also install selector switch and pistol grip. Package Contents: Strike Industries AR Trigger Hammer Jig Trigger Hammer Jig Strike Industries SI-AR-THJ: AR Trigger Hammer Jig Black One Size