20mm Side Mount Base for Weaver Rails Key benefits Wide compatibility for 20mm rails: attaches to a 20mm standard Weaver base and accepts any scope mounts. Durable, lowglare finish: Matt Black coating for a professional look and lasting performance. Simple installation: Install any scope onto this 20mm scope mount base; included in the package. Convenient maintenance access: The mount can stay on the weapon while the cover is removed for cleaning and access to the gas piston. Precise, adjustable fit: To adjust, swing the hold down locking latch fully to the left, then hold down the springloaded bar and turn the notched retaining nut for incremental adjustments. This provides a tight hold on the mount holder. Important usage and fitting notes Do not overtighten: If you cannot close it with moderate force, you have tightened it too much. Back off and readjust the notched adjustment nut. What's included Side mount base for 20mm Weaver rails (ready to install and use with compatible scopes). Use scenarios Scenario 1: You need to mount a scope to a rifle with a 20mm Weaver rail. Attach the 20mm side mount base and install your preferred scope onto it. Scenario 2: In the field or on the bench, keep the mount in place and remove the cover for routine cleaning or to access the gas piston, without removing the base. Scenario 3: When aiming for precise alignment, use the incremental notched adjustment to finetune the mounting position for a secure, repeatable zero without overtightening.