Our jig will give you the support you need to get square and true to the laser. The Jig can also tilt up to 45° allowing you to hit those back side radiuses. There are 3 set knobs with delrin tips to posi-lock your upper to the jig without marring the finish. The jig is made from 6061-T6 billet aluminum sourced right here in the USA and all parts are manufactured and assembled here in our shop.