Frame mounted optic mount for the Holosun 407/507/508, RMR or Swampfox optic. You can now add five more rounds to your G44 magazines! The 3D printed extensions are a great addition. In order to install you need to remove the load assist on the sides with a flat head screwdriver, remove the factory base plate, and then stretch the spring out so that it will provide ample tension on the follower. Shaving off the little tabs on the side of the magazine Wallace Est with getting the base plate on safely, and the setscrew will allow for at the lock into place.
Frame mounted Optic mount and +5 baseplate combo