22 Rifle Single Shot JC Higgins model 103.18 22 / Marlin 100 and 100g Dovetail Size 3/8"
2.25" plus inches long
A
standard 3/8" (9.525) dovetail slot refers to the dovetail groove used
on rifles for mounting sights and scopes. The groove has a 45-degree
angle, with the3/8" (9.5 mm) dimension measuring the bottom width of the slot.The top width of a 3/8" dovetail is approximately 12.7 mm.
Key features of a 3/8" dovetail slot:
Angle:45 degrees.
Bottom Width:3/8 inch (9.5 mm).
Top Width:Approximately 12.7 mm.
Application:Used for mounting accessories like sights and scopes on rifles.
3/8" is common: Several sources mention 3/8" as a standard or common dovetail size, particularly for many rifles.
Other sizes exist: Some search results list rear sights with dovetail dimensions other than 3/8", such as:
3/16"
Various metric dimensions (especially for European and other international firearms)
Dimensions around .370", .372", .375" (which are very close to 3/8")
Larger sizes like .495".
In conclusion, while 3/8" is a
prevalent size for rifle rear sight dovetails, it is not universal.
Different manufacturers and even different models from the same
manufacturer may use other dimensions.
To determine the dovetail size for a
specific rifle, it's best to either measure it directly or consult the
rifle's specifications or documentation.