Rusan ARM52-52.5 Adapter for thermal or night vision clip-on — bell Ø 52.5 mm

Rusan is a brand specializing in the manufacture of high-quality mounts, such as Picatinny rails, rings, and adapters for thermal and night vision scopes. This M52x0.75 – 52.5 mm adapter stands out for its reliable, precise construction, designed specifically to ensure an optimal fit on vision devices. The engineering behind this component ensures a robust connection that meets the standards required by advanced optics users. Its construction makes it easy to mount equipment securely while maintaining the stability needed in the field. Its precise dimensions allow for an exact fit, reinforcing the brand’s reputation for developing highly reliable accessories for precision optics.

How to mount it: the ARM52 clamps onto the outside of the day scope’s objective bell with a tightening lever; the clip-on screws onto its front. The day scope remains untouched, so you don’t lose zero.

Measure before ordering: measure the outer diameter of the scope’s objective bell, not the objective lens. This version is for Ø 52.5 mm.

Note: you may need a reducing ring. Many devices don’t screw directly onto the M52x0.75 and also need a Rusan reducing ring with the thread for their brand. For Guide TA/TB, Guide TA435, Bering Optics Hogster, and Lahoux Clip, that ring is the ATA435. ARM52 + reducing ring = complete adapter.