To access the screw located beneath the handguard on the original mount, the handguard must first be removed. Following this, the screw itself must be extracted to facilitate the removal of the original mount. This process can be challenging, so exercise caution during both the removal of the original mount and the installation of the EGW mount. EGW strongly advises that their products be installed by a skilled and certified gunsmith. Note that metric screws are exclusively available with hex heads. It is recommended to measure the hole spacing on your receiver to ensure compatibility with the dimensions provided by EGW. The picatinny cross slots extend the entire length of the rail, offering flexibility for mounting scope rings and other accessories. EGW's one-piece scope mounts are ideal for both hunters and tactical shooters. This mount is a picatinny-style base, compatible with both picatinny and weaver scope rings. EGW manufactures these mounts in-house using their machining centers. Post-machining, the mounts undergo tumbling, sandblasting and type III anodizing to ensure long-lasting durability. For shooting distances of 500 yd - 1000 yd, a 20 MOA mount is recommended. When zeroing a rifle with a 20 MOA mount, EGW suggests zeroing at 200 yd. For installation, EGW recommends applying 20 in-lb of torque and a drop of blue Loctite (sold separately). All components, from the mounting screws and wrench to the packaging, are manufactured in the USA. To install the EGW Tikka T3x Tac A1 picatinny scope mount, remove the handguard and the front screw of the original mount, a qualified gunsmith should perform the installation The single-piece aluminum mount features picatinny cross slots, offering flexibility for scope rings and accessories, and is engineered for long-range shooting with a 30 MOA elevation Manufactured in the USA, the mount requires 20 in-lb of torque and a drop of blue loctite for installation, and is compatible with picatinny and weaver rings