NO drill option. Velcro attachment so you dont have to drill any holes, and you can still adjust up and down or take off. Area on the stock where you want to apply the adhesive side of the velcro must be completely clean for it to adhere. The TacOps adjustable cheek rest saddle is designed to be attached to almost any rifle or shotgun stock, wood or plastic. You can now adjust the comb to suit your eye relief for scope or open sights. Made of black ABS which can be manipulated to stock contour, and will fit stocks up to 40mm wide. This kit also comes complete with a neoprene adhesive TecSkin pad to add comfort and a non slip soft grip texture to your cheek. (area on the cheek rest you apply this to must be completely clean for it to adhere). + Ill also include a home made "velcro separator tool" (vst) FREE. Bolts can be ordered separately as an additional fitting option. Proudly designed and made in New Zealand. Support NZ made.