Polymer80's ar15 universal jig is compatibility with mil-spec 80 percent ar15 lower receivers no matter whether they're polymer or metal.The universal jig is designed with a super rigid long-fiber nylon composite, which allows you to utilize the jig up to 3 times.The jig also provides a stable platform for milling, and therefore encompasses the entire ar15 lower receiver.This kit includes a two sided jig, three trigger guides, 9mm hss end-mill, and drill bits (5/16th, 3/8th, and 5/32nd).

Type: Jig
Gun Model: AR-15
Gun Type: AR Platform
Caliber: Various
Material: Polymer
Finish: AR-Style Rifles
Trigger: AR-15