How a 1 inch (25.4 mm) scope mounts to a Picatinny rail (MIL-STD-1913): use 1 inch rings cut for the Picatinny rail (MIL-STD-1913) pattern. Ring size, the fit and the height to pick.

Updated 05 September 2026.

Scope Mount Finder / Every rail, tube and red-dot footprint

Fit a 1 inch (25.4 mm) scope on a Picatinny rail (MIL-STD-1913)

Name: Fit a 1 inch (25.4 mm) scope on a Picatinny rail (MIL-STD-1913): published specification
Creator: Scope Mount Finder
License: https://creativecommons.org/licenses/by/4.0/

A 1 inch (25.4 mm) scope on a Picatinny rail (MIL-STD-1913): the ring size, the pattern to match and how ring height clears the objective.

Direct fitA 1 inch (25.4 mm) scope mounts on a Picatinny rail (MIL-STD-1913) with 1 inch Picatinny rings or a one-piece mount, so no adapter is needed. The rings must be cut for 1 inch and for the Picatinny rail (MIL-STD-1913) pattern; match the ring height to the objective.

interface

MountPicatinny rings or a one-piece mount

seats on

RailPicatinny rail (MIL-STD-1913)5.23 mm slot, 10.01 mm pitch

Fit readoutBench figures

Fitment

Scope tube

1 inch (25.4 mm)

Ring size

1 inch rings

What to fit it with

Shop 1 inch scope rings for Picatinny rail (MIL-STD-1913) on Amazonaffiliate Find 1 inch scope rings for Picatinny rail (MIL-STD-1913) on eBayaffiliate Shop 1 inch scope rings medium height on Amazonaffiliate Find 1 inch scope rings medium height on eBayaffiliate

Rings must match the tube. A 1 inch (25.4 mm) scope needs 1 inch rings; a ring cut for another diameter either will not close or lets the tube slip. The ring pattern must also match the Picatinny rail (MIL-STD-1913).

Picatinny rings lock into the rail slots, so the scope holds zero under recoil. Once the diameter and pattern match, ring height decides objective clearance: low rings for a small objective, taller rings as the bell grows.

Related fitments

›1 inch (25.4 mm) scope tubematch rings to the tube
›Picatinny rail (MIL-STD-1913)the base
›Ring height and objective clearancepick the height

Questions and answers

Fit a 1 inch (25.4 mm) scope on a Picatinny rail (MIL-STD-1913)?

A 1 inch (25.4 mm) scope mounts on a Picatinny rail (MIL-STD-1913) with 1 inch Picatinny rings or a one-piece mount, so no adapter is needed. The rings must be cut for 1 inch and for the Picatinny rail (MIL-STD-1913) pattern; match the ring height to the objective.