| CPC F41G 11/001 (2013.01) | 32 Claims |

|
1. An apparatus comprising:
a body attachable to a firearm part, the body including a top surface defining an optic mount; and
a nut to retain an optic sight on the optic mount, the nut to mount on an externally threaded part;
wherein the body further includes:
a slot or other opening defined, at least in part, by the top surface of the body; and
a pocket or threaded opening, a first portion of the externally threaded part to pass through the slot or other opening when a second different portion of the externally threaded part is located in the pocket or threaded opening;
wherein the slot or other opening, or the pocket or the threaded opening, is configured to fix a rotational position of the externally threaded part.
|