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Ruger Scope Rings

Ruger 6K30 30mm Stainless Extra High Rifle Scope Mount Rings for M77,10/22 etc

SINGLE RING - NOT A PAIR. Select quantity 2 to get a pair
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Ruger scope mount rings are supplied as single units - NOT pairs

If you enter quantity 1 when you buy you will buy ONE ring - NOT a pair. For a pair enter 2. This is because some models (M77) require different heights front and back. Others such as 10/22 take the same size making it a lot easier!

Please read fitting carefully. Mount returns due to choosing the wrong size are WAY too common - cost us both - and are so easily avoidable! If unsure please ask....Please read the fitting and compatibility info below.

Sizes and fitting:

Note - These rings do not fit the American Rimfire. That model has a standard 3/8" dovetail base

Below is a summary. See the charts for more detail or go to or

Height - Ruger use numbers to designate height. This listing if for size 6.
  • 3 = Low = upto 32mm scope lens
  • 4= Medium = upto 42mm scope lens
  • 5= High = upto 52mm scope lens
  • 6 = Extra High = Upto 62mm scope lens
Tube diameter
This is a 30mm.

Material and Finish
Ruger make them in a variety. The ones in this advert are Stainless finish
  • 6K30 means it is a is a size 6 Extra High / K = Stainless finish / 30= 30mm ring
Popular Ruger model quick guide

10/22 - size 3 front and rear for upto 32mm scopes. size 4 front and rear for upto 42mm scopes. Size 5 front and rear for upto 52mm scopes and size 6 front and rear for upto 62mm scopes.

For M77 models with blued base rails. For stainless base you need to get the code K stainless mounts.
  • 1" scope upto 32mm lens - Front ring 3K and rear ring 4K
  • 1" scope upto 42mm lens - Front ring 4K and rear ring 5K
  • 1" scope upto 52mm lens - Front ring 5K and rear ring 6K
  • 30mm scope upto 42mm lens - Front ring 4K30 and rear ring 5K30
  • 30mm scope upto 52mm lens - Front ring 5K30 and rear ring 6K30
  • Scopes over 52mm lens are not recommended for the M77 range
RING 6K30 30MM X-HIGH Stainless
  • Item No: 6K30
  • Ruger product ID - 90287
  • Finish: Stainless silver
  • Accepts scopes with upto 62mm objective lens diameter and 30mm tube diameter
  • Height: .680"

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Brand Ruger
Code NW1322
Weight 0.11kg
MPN 6K30
EAN 736676902873