LTT FASTBACK OPTIC MOUNT INSTALLATION INSTRUCTIONS

1. If you have an RMR footprint Fastback mount, first attach your optic onto the plate and tighten the screws to check their length. Screws that are too long may dimple your receiver, damage the optic mount, and affect your ability to zero the optic and sights. Then, remove the optic.
2. Install the plate onto the receiver and use the T20 Torx driver to install all three mounting screws and torque to 15in/lbs. You do not need to apply threadlocker. The Fastback screws come with Vibratite VC3 pre-coated onto the screws. 
3. Install your optic.
   1. If you are using an RMR, be sure to apply threadlocker and torque the optic mounting screws to 12in/lbs.
   2. If you are using a Holosun 509T or Aimpoint ACRO footprint optic, seat the recoil lug against the front of the recoil lug slot and tighten the cross bolt to the manufacturer’s recommended value.