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🔧 Lock in your precision — never miss a shot with Bontok’s ultimate rail adapter!
The Bontok 11mm to 21mm Picatinny Rail Adapter is a precision-machined aircraft aluminum alloy mount that converts standard 11mm dovetail rails to versatile 21mm Picatinny rails. Featuring three built-in locking screws and a recoil-resistant stop-pin, it guarantees a secure, zero-shift optic placement. Its 3.94-inch length with 9 slots and low-profile design offers ample, snag-free mounting options for professional-grade firearm customization.
| ASIN | B0BPPRB28H |
| Best Sellers Rank | #5,744 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #4 in Sporting Optics Mounts |
| Brand Name | Bontok |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,443) |
| Date First Available | December 10, 2022 |
| Included Components | Convert 11mm Dovetail to 21mm Picatinny Rail |
| Item Package Dimensions L x W x H | 6.02 x 1.85 x 0.71 inches |
| Package Weight | 0.07 Kilograms |
| Style | 1 PACK - 9 Slots |
| Warranty Description | 180 |
H**L
Worked great, after a little custom fitting
I purchased this with the intent of modifying it to fit on a 760 Pumpmaster pellet gun. Since it had a rounded receivers, and since you cannot put any clamping force on the rear section of the receiver, doing so clamps the BB loading tube closed so no BBs can go into it. This mount was hopefully going to clamp only on the front rail and not touch the rear at all. First thing necessary is to use a good size rat-tail file to make a suitable concave run in the bottom of the mount with a contour matching the contour of the top of the 760 receiver. Next, file the bottom rear corners off so that the do not touch the front of the rear receiver dovetail. Only need to take a little off there. With that done this mount fits snugly and now has a Millet red dot on it. I only used the front and middle screws on the mount. I put the rear one in but for looks only, the front and middle screws are more than sufficient to hold the red dot on a BB/pellet gun. Well worth the effort. This combination is giving me BB groups at 20’ less than a dime. Why 20’, it’s a BB gun, not my 1600fps high end pellet rifle. So, if you have a rounded top BB/pellet rifle/gun, and want to put a scope or red dot on it, and am a little handy with a file I highly recommend this base over the bases that have only two clamping screws.
A**M
Optic rail
Works great . Product as described. Well built not junk
S**R
Fit My Mossberg 702 Plinkster
This mounted right up to my Mossberg 702 Plinkster. No issues. Just get yourself some thread locker. It doesn’t cowitness with the factory sights. It’s solid and high quality. A great bang for Buck. For a cheap 22,why pay more.
J**W
It works
I used on a 22 wmr with a bug buster scope it worked like a charm, super accurate and continues to hold zero.
R**N
Just what I needed
Perfect
S**S
Can't beat the quality for the price....
Fit perfectly on a 1949 Mossberg 22LR....Standard Weaver rings fit without difficulty. Mounts low and tight. Plenty of length for eye relief adjustments.....
D**N
Nice quality unit
Nice. Solid and clean build quality. Good price
D**N
Perfect adapter for necessary rail attachments
Great adapter looks and works as it should will be buying more when needed!
Trustpilot
1 month ago
1 day ago