Weaver Ring Mount | 40 mm | Screw

This mount is designed for Weaver rails. Weaver is an older standard with narrower cross slots than Picatinny.

Picatinny vs. Weaver:

Picatinny and Weaver are similar but not the same. The difference lies in the recoil slots:
• Picatinny: Slots are 5.23 mm wide with a center-to-center distance of 10.01 mm (fixed standard)
• Weaver: Slots are 4.57 mm wide with variable spacing (no fixed standard)

A Weaver mount can often also be mounted on a Picatinny rail because the Weaver lug is narrower than the Picatinny slot. However, a Picatinny mount will NOT fit on a Weaver rail – the lug is too wide.

This mount fits Weaver rails and most Picatinny rails.

See compatible mounts:Scope Mounts

This mount is made of steel. Steel is the classic choice and offers high rigidity and wear resistance. The material withstands repeated mounting and unmounting without deforming the contact surfaces.

Steel is heavier than aluminum, but for a ring mount, the weight difference is practically minimal.

This assembly is blued. Bluing, also known as black oxidation, is a chemical surface treatment that provides an attractive, matte black finish and a certain degree of corrosion protection. It is the most traditional surface treatment for firearm parts.

Bluing is less durable than QPQ and requires a bit more care – a thin layer of oil after use in damp weather will keep the surface in good condition.

These rings have an inner diameter of 40 mm and are suitable for binoculars with 40 mm tubes.

Always check your binocular's tube diameter before purchasing – it is listed in the binocular's specifications or can be easily measured with a caliper.

Installation is simple. The rings are attached to the picatinny rail, and the scope is placed in the lower ring halves, after which the upper halves are tightened.

Manufacturer's recommendation:
• Tightening torque for ring screws (top, M3.5): 1.8–2.0 Nm
• Tightening torque for rail attachment (M4): 2.0–2.5 Nm
• Ensure the scope is level and has correct eye relief before final tightening

A torque wrench is necessary for proper installation. Overtightening can damage the scope tube.

Scope mounting: Read the guide here

Rusan is a Croatian manufacturer with over 30 years of experience in precision rifle mounts. All products are manufactured in-house on modern CNC machines from solid material – without casting or metal injection. Rusan is known for tight tolerances, high repeatability, and an unusually wide range of rings, mounts, and adapters for night vision optics.

Read more about Rusan here: Rusan

See all products from Rusan: Rusan Collection