If your clip-on device does not have it's own counter nut, you need to buy counter nut in appropriate thread size.
The following connectors have built-in system for orientation of device, no need for...
The Rusan quick-release assembly with 30mm rings for Blaser is clamped with two side-mounted levers. This means you can quickly assemble or disassemble them (after adjusting the clamping force). The...