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What's the difference between picatinny rails and weaver rails?


Asked by Marilyn Lowe on Dec 11, 2021 FAQ



The Picatinny rail is very similar to the Weaver design, but they do not exactly interchange. The Weaver mounting rails have slots that are .180” wide and do not necessarily have a consistent spacing between the grooves.
Also,
Because of this, Weaver devices will fit on Picatinny rails, but Picatinny devices will not always fit on Weaver rails. So those Weaver style rings that came with your new scope will work on both styles of rails.
In fact, The Picatinny rail (/ˈpɪkətɪni/ or /ˌpɪkəˈtɪni/), or Pic rail for short, also known as a MIL-STD-1913 rail or STANAG 2324 rail, is a military standard rail interface system that provides a mounting platform for firearm accessories. It was originally used for mounting scopes atop the receivers of larger caliber rifles.
Subsequently,
Weaver rail. A Weaver rail mount is a system to connect telescopic sights and other accessories to rifles, shotguns, pistols, and crossbows. It uses a pair of parallel rails and several slots perpendicular to these rails.
Likewise,
The most common scope mounting system is called a Weaver style. These utilize the flat rails with crosswise slots in them that you see on everything from rifles to shotguns to handguns. The Weaver style bases are 7/8 inch wide and accept Weaver style rings.