Scope Mount Finder guides
Practical guides to measuring, sizing and choosing the right part, from the same sourced data behind the fitment tool.
Picatinny vs Weaver Rails ExplainedThe exact slot dimensions that separate Picatinny and Weaver rails, and why a mount for onThe 11mm Airgun Dovetail ExplainedWhy airgun dovetails are not Picatinny, how the 11mm to 13mm width varies, and what that mHow to Measure Your Scope Tube DiameterMeasure the main tube correctly so your rings match to the millimetre, covering 1 inch, 30How to Choose Scope RingsPick rings by matching tube diameter, rail type and height so the objective clears the barRed Dot Footprints and Why They DifferThe common red dot mounting footprints compared, and why a plate cut for one optic will noHow to Match a Mount to Your Rail and TubeA clear order of checks, rail type then tube diameter then height, so the mount you buy acHow to Avoid Return-to-Zero ProblemsPractical fitting habits that keep a scope holding zero, from correct rail fit to even rin