Rusan Q-R adapter M52x0.75 for Ø56 mm (ARM52-56)

What it is and what it does
Quick-release (Q-R) clamping adapter to attach clip-on night-vision or thermal devices with an M52x0.75 thread to day-scope objectives of 56 mm. It enables rapid mounting and removal of the clip-on unit without altering the optics.

Key characteristics
The ARM52-56 model is designated for a 56 mm objective diameter. Most ARM52 models feature a total length of 48 mm and a clamping length of 37 mm; the clamping adjustment allows approximately ±0.2 mm variation. Published weight: 0.164 kg. Made from aircraft-grade aluminium and fitted with an inner coating that improves grip and prevents scratching. The adapter is designed to remain in place under heavy recoil and has been tested with .338 Lapua Magnum and .416 TYR. The ARM52 family received a 2017 redesign including a shorter/narrower locking lever and a wall thickness reduction (2.5 -> 2.0 mm).

Compatibility
Thread: M52x0.75. Designed for devices with that thread (examples: Dedal, Jahnke, Lahoux). Using reduction rings (ordered separately) it can be adapted to other brands such as Armasight, Pulsar or ATN.

Accessories and extras
Reduction rings and Weaver rails prepared for sizes >=48 mm (WRA-9 / WRA-17 / WRA-25) are sold separately.