11mm Dovetail to Picatinny Adapter: Scope Ring Mounting Guide
By Texas Precision Optics Inc | Published: 2026-11-03
Category: 購入ガイド
Choose the right 11mm to Picatinny adapter for scope rings by matching dovetail width, ring height, and rail profile. A practical buying guide with decision rules.
Quick answer
Buy an 11mm to Picatinny adapter that matches your dovetail width and gives enough rail height for your scope rings. For most air rifle and rimfire setups, a low-profile dovetail adapter like the DV11-34S is the practical starting point.
Match the dovetail width before anything else
Dovetail rails come in different widths, and an 11mm adapter will not fit a wider 3/8-inch rail. Measure the top width of your existing dovetail with calipers and compare it to the adapter's stated dovetail range. If your rail is wider than 11mm, this adapter is the wrong part, no matter how well the Picatinny side matches your rings.
Decide between low profile and raised Picatinny
A low-profile adapter keeps the scope close to the bore, which helps with cheek weld on rifles that already have a high comb. A raised 20mm Picatinny riser mount adds height and is useful when your rings are short or your stock has a high comb. The DV11-34S is 0.67 inches tall, so check that height against your ring height and scope objective before buying.
Check ring clearance and scope tube size
Picatinny rings are available for 1-inch, 30mm, and other tube sizes, but the adapter only provides the rail. You still need rings that fit your scope tube and sit low enough for your stock. If you already own a 30mm scope mount for an 11mm dovetail, adding this adapter may not be necessary and could add unnecessary height.
Decision rules for buying an 11mm to Picatinny adapter
- Measure your dovetail width: Use calipers to measure the top width of your dovetail rail. If it is 11mm, this adapter is a candidate. If it is closer to 3/8 inch (9.5mm) or wider than 11mm, look for a dedicated adapter for that width. Write down the measurement before you shop.
- Calculate required rail height: Add your ring height to the scope's objective radius, then compare that total to your stock's comb height. Choose a low-profile adapter if you need to keep the scope close to the bore. Choose a raised 20mm Picatinny riser mount if you need extra height for cheek weld or ring clearance. If the total height is more than 0.2 inches above your current setup, check eye alignment before tightening.
- Confirm ring compatibility: Your scope rings must be Picatinny standard, not just Weaver. Picatinny slots are wider and have a different crossbolt shape. If you have Weaver rings, they may fit loosely or not at all on a Picatinny rail. Test-fit the rings on the adapter before mounting the scope.
- Check for a recoil stop: A recoil-resistant stop pin or screw helps prevent the adapter from shifting under recoil. If your rifle has strong recoil, prioritize an adapter with a stop pin and tighten it firmly. Recheck tightness after the first range session.
Product facts
- 3/8" 11mm to 7/8" 20mm Dovetail to Picatinny Adapter Mount, Low Profile Dovetail to Picatinny Rail 11mm to 21mm Picatinny Riser Mount (DV11-34S): Converts an 11mm dovetail to a 7/8-inch Picatinny rail and is made from 6061-T6 aluminum alloy. This adapter lets you mount Picatinny-standard scopes and red dots on an 11mm dovetail rifle, while the aluminum construction keeps weight reasonable.
3/8" 11mm to 7/8" 20mm Dovetail to Picatinny Adapter Mount, Low Profile Dovetail to Picatinny Rail 11mm to 21mm Picatinny Riser Mount (DV11-34S) - 3/8" 11mm to 7/8" 20mm Dovetail to Picatinny Adapter Mount, Low Profile Dovetail to Picatinny Rail 11mm to 21mm Picatinny Riser Mount (DV11-34S): Height is 0.67 inches and width is 1.02 inches, with a recoil-resistant stop pin. The stop pin helps maintain zero under recoil, but the fixed height means you should verify it matches your ring and stock setup before ordering.
Who this adapter is for
Best for
- Shooters with an 11mm dovetail air rifle or rimfire who want to use Picatinny scope rings or red dots
- Rifles where a low-profile adapter keeps the scope at a comfortable height for the stock
Not for
- Rails wider than 11mm or narrower than 11mm, such as 3/8-inch dovetails that need a different adapter
- Shooters who already have a dovetail-specific scope mount that fits their rings and height
