How to Make That Old Pistol Red Dot Ready | American Handgunner Insider
This guide details how to install an Outer Impact Modular Red Dot Adapter (MRA) system on a Sig P320 pistol that is not originally optic-ready. The process involves removing the rear iron sight, cleaning the dovetail, installing a filler piece and mounting plate, and then attaching the red dot sight. This method allows for the addition of modern optics to older handgun models without requiring slide milling.









