--- product_id: 339120945 title: "LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8\" to 7/8\" Converter" brand: "lonsel" price: "€ 15.54" currency: EUR in_stock: true reviews_count: 8 category: "Lonsel" url: https://www.desertcart.hr/products/339120945-lonsel-dovetail-to-picatinny-rail-adapter-11mm-dovetail-to-21mm store_origin: HR region: Croatia --- # Converts 11mm dovetail to 21mm Picatinny rail Low profile 0.59" riser with 9-slot rail Aircraft-grade aluminum alloy LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8" to 7/8" Converter **Brand:** lonsel **Price:** € 15.54 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Aim with Precision and Style! ## Quick Answers - **What is this?** LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8" to 7/8" Converter by lonsel - **How much does it cost?** € 15.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/339120945-lonsel-dovetail-to-picatinny-rail-adapter-11mm-dovetail-to-21mm) ## Best For - lonsel enthusiasts ## Why This Product - Trusted lonsel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile 9-Slot Rail:** Equipped with 9 Picatinny slots, it offers flexible mounting positions for scopes, red dots, and other tactical accessories. - • **Seamless Rail Conversion:** Effortlessly transform your 11mm dovetail mount to a versatile 21mm Picatinny rail, expanding your optics and accessory options. - • **Optimized Low-Profile Design:** At just 0.59" height, this riser rail maintains a sleek silhouette while providing perfect scope alignment and stability. - • **Precision Engineered Durability:** Crafted from premium aircraft-grade aluminum with a sleek black hard coat anodize finish for unmatched strength and longevity. - • **Tool-Free Installation Confidence:** Quick, secure setup with a dovetail mount and vertical stop pin, plus an included Allen wrench to ensure zero shake under pressure. ## Overview The LONSEL Dovetail to Picatinny Rail Adapter is a robust, aircraft-grade aluminum mount that converts 11mm dovetail bases to 21mm Picatinny rails. Featuring a low-profile 0.59" riser and 9-slot rail, it offers versatile optics placement and stable, shake-free installation with included tools—perfect for professionals demanding precision and durability. ## Description LONSEL Dovetail to Picatinny Rail Adapter 11mm to 21mm Rail Low Profile Converter Adapters - Provide 1 Pack & 2 Pack to Meet Your Different Needs! Lightweight & Durable ｡◕‿◕｡Precision Machined from aircraft grade aluminum and finished in a matte black hard coat anodize, durable solid structure. 11mm To 21mm Rail Convert Adapter ｡◕‿◕｡ Compatible with 11mm or 3/8" dovetail mounts, can be used to convert to 21mm picatinny rail mount, allowing for more flexible optics. Low Profile Riser Rail Design ｡◕‿◕｡3.94" picatinny rail with 9 Slots with a 0.59" saddle height riser rail, provides more flexible optics placement and eye relief. Flexible Application ｡◕‿◕｡The adaptor's picatinny rail allows for the mounting of standard picatinny scopes, red dots, or other optics. Easy to Install ｡◕‿◕｡Three high strength locking screws ensure a solid mount-to-receiver lock up, attached allen wrench can help you to ensure tight enough, keep stable and no shaking. Package List ♣ [2 PACK]: 2 x 11mm Dovetail to Picatinny Rail Adapter + 2 x Allen Wrench (Optional) ♣ [1 PACK]: 1 x 11mm Dovetail to Picatinny Rail Adapter + 1 x Allen Wrench (Optional) Review: Details need to better worded but over all, GREAT! - This came in quick, it worked well for the fun, the only thing is, that the listing of said item was confusing as to which sizes there were. So because of how the product was listed, we got the wrong rail adapter, but it was still able to work for the gun. It really is a great product, sturdy and durable just make sure to really check the wording and the sizing for the best fit. Review: Great BANG for the BUCK$! - I used this rail adapter to install a Nikon 3x9x50 scope with Weaver rings onto my Marlin, Model 60, 22LR. The fit was perfect for this unit due to the length and height. It allowed just enough space or height for the large diameter of the 50mm lens while keeping the height above barrel bore at 2” inches. It holds securely onto the small dovetail of the rifle allowing me to maintain MOA as close as I can achieve with 22LR caliber. A great option for the responsible person who wants a setup that doesn’t require gunsmith’s. ## Features - Precision Material: Premium out of aircraft grade aluminum alloy and black hard coat anodize finish, sturdy & durable. - Convert 11 mm Dovetail to 21 mm Picatinny Rail: 2.94 inches length at the base, the picatinny rail extends 3.94 inches allowing for more flexible optics placement. - Mount Base: Fit 11 mm dovetail mounts, Base mount 3/8" to 7/8" converter adapter. Low profile 0.59" riser rail for scope. - Top With 9 Slots Style Rail: Top 21mm picatinny rail allows for the mounting of picatinny standard scopes, red dots or other accessories. - Easy To Install: Rail adaptor installs easily via dovetail mount and one vertical stop pin, attached allen wrench can help you to tight stable and no shaking. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0982V87YJ | | Best Sellers Rank | #8,714 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3 in Sporting Optics Mounts | | Brand Name | LONSEL | | Color | Black | | Customer Reviews | 4.5 4.5 out of 5 stars (3,320) | | Date First Available | June 28, 2021 | | Item Package Dimensions L x W x H | 5.83 x 3.15 x 0.75 inches | | Manufacturer | LONSEL | | Material | Aluminum | | Package Weight | 0.06 Kilograms | | Style | 1 PACK - 9 Slots | ## Images ![LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8" to 7/8" Converter - Image 1](https://m.media-amazon.com/images/I/61SoFhfp4iS.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Will this fit a CZ 457?** A: If the seller/manufacturer has stated the specifications correctly, it should "fit". AFAIK, 11mm on a CZ 457 is still 11mm on an air rifle. A few IMPORTANT caveats to keep in mind: (1:) I've not tried this product & do not "vouch" for it. (2.) When a mfr refuses to provide dimensional drawings, you SHOULD question their claims! (3.) Wrt the CZ 457, you really should COMPARE THIS to other products offered - note the diffs. **Q: Will this work for gamo magnum g2 or maxxus g2?** A: Don’t know but it is 15mm bottom and 20mm top I use it on a crossbow **Q: Has anyone got this to fit on a Ruger break barrel air rifle? The top of the dovetail is curved, not flat.** A: that should not matter as all of my guns with a 11mm rail are curved as in cut into the side of a round tube **Q: Will it mount a 20mm red dot ?** A: Yes, it will mount a red dot scope with a picatinny base. In fact, I have a red dot scope on a Lonsel adapter on my Weihrauch HW97K air rifle. It puts 22 cal. pellets in the "X" Ring of the target, one after another in the same hole: very accurate..... This is a sturdy, well constructed product. D.W. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Details need to better worded but over all, GREAT! *by S***Y on May 7, 2026* This came in quick, it worked well for the fun, the only thing is, that the listing of said item was confusing as to which sizes there were. So because of how the product was listed, we got the wrong rail adapter, but it was still able to work for the gun. It really is a great product, sturdy and durable just make sure to really check the wording and the sizing for the best fit. ### ⭐⭐⭐⭐⭐ Great BANG for the BUCK$! *by A***R on May 20, 2026* I used this rail adapter to install a Nikon 3x9x50 scope with Weaver rings onto my Marlin, Model 60, 22LR. The fit was perfect for this unit due to the length and height. It allowed just enough space or height for the large diameter of the 50mm lens while keeping the height above barrel bore at 2” inches. It holds securely onto the small dovetail of the rifle allowing me to maintain MOA as close as I can achieve with 22LR caliber. A great option for the responsible person who wants a setup that doesn’t require gunsmith’s. ### ⭐⭐⭐⭐⭐ Works perfectly with Citadel 12 Gauge Warthog *by D***K on May 6, 2026* I have a Citadel 12 Gauge Turkish Warthog Semi-Auto Shotgun with dovetail rails on the top of the receiver. This fit it perfectly. Once tightened, the tap doesn’t move and looks it was made to fit. It is well made, has a great anodized finish without any blemishes. I highly recommend this if you the same shotgun as I do. I am sure it will serve me very well. I plan to mount a red dot on this rail very soon. ## Frequently Bought Together - LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8" to 7/8" Converter - LONSEL 1'' Scope Rings, 2Pcs High Profile or 2Pcs Medium Profile 1 Inch Scope Mount Rings for Picatinny Rail - LONSEL 1'' Dovetail Scope Rings, 2 Pack High Profile or Medium Profile 1 Inch Scope Mount Rings for 11mm Dovetail Rails --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/339120945-lonsel-dovetail-to-picatinny-rail-adapter-11mm-dovetail-to-21mm](https://www.desertcart.hr/products/339120945-lonsel-dovetail-to-picatinny-rail-adapter-11mm-dovetail-to-21mm) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-14*