M16 Auto Sear Hole Location Admin 4260 Share M16 Auto Sear Hole Location Download Full Resolution HD Webaug 31, 2012 · there is a guy on gun broker that sells a jig for drilling the sear hole. Look up m16 jig. Its a great tool also good for check sear hole on other lowers. View Original Resolution Read also: Property Manager Salaries Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD Full HD