--- product_id: 517372141 title: "Bontok 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8\" to 7/8\" Converter" brand: "bontok" price: "49.65 DT" currency: TND in_stock: true category: "Bontok" url: https://www.desertcart.tn/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws store_origin: TN region: Tunisia --- # 3.94-inch length with 9-slot Picatinny rail for versatile mounting 3 built-in locking screws for rock-solid stability Aircraft-grade aluminum alloy with matte anodized finish Bontok 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter **Brand:** bontok **Price:** 49.65 DT **Availability:** ✅ In Stock ## Summary > 🔧 Elevate your aim with precision and style—because your gear deserves the upgrade. ## Quick Answers - **What is this?** Bontok 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter by bontok - **How much does it cost?** 49.65 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws) ## Best For - bontok enthusiasts ## Why This Product - Trusted bontok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Snag-Free Setup:** Low-profile 0.59" saddle height with 9 slots offers flexible, hassle-free mounting options. - • **Rugged Yet Sleek:** Crafted from aircraft aluminum with a stealthy black matte finish for durability and style. - • **Lock & Load Precision:** Triple locking screws ensure zero movement under recoil—no slip, no miss. - • **Recoil-Proof Confidence:** Integrated recoil stop-pin locks your setup tight, keeping zero intact shot after shot. - • **Expand Your Optics Horizon:** Convert 11mm dovetail to 21mm Picatinny rail for ultimate scope compatibility. ## Overview The Bontok 11mm to 21mm Picatinny Rail Adapter is a precision-machined aircraft aluminum 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-retention setup for your optics. Its 3.94-inch length with 9 slots and low-profile design offers flexible, snag-free mounting for professional-grade firearm customization. ## Description desertcart.com: Bontok Dovetail to Picatinny Rail Adapter, 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter-9 Slots-Black-(1 Pack) : Sports & Outdoors ## Features - Convert 11 mm Dovetail to 21 mm Picatinny Rail: Dovetail to Picatinny rail adaptor for firearms equipped with 11mm or 3/8 inch dovetail standard and extends 3.94 inches allowing for more flexible optics placement.. - Precision Material: Precision machined out of solid structure aircraft aluminum alloy in black matte coating anodizing finish. - Upgraded Build-in Locking Screws: Three high strength build-in locking screws of side ensure a solid mount to lock up on rail. - No Sliding: Recoil resistant stop-pin on the top provides in additional zero retention against recoil force to prevent the adapter from sliding. - 9 Slots Style Rail: 3.94" picatinny rail with 9 slots with a 0.59" saddle height provides ample space for snag free mounting of different sized picatinny standard scopes. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BPPRB28H | | Best Sellers Rank | #5,913 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #4 in Sporting Optics Mounts | | Brand Name | Bontok | | Color | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (1,516) | | 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 1.81 x 0.75 inches | | Package Weight | 0.08 kg | | Style | 1 PACK - 9 Slots | | Warranty Description | 180 | ## Images ![Bontok 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter - Image 1](https://m.media-amazon.com/images/I/61ojBXTugSL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Does this fit Cricket chipmunk ?** A: If you are using the Crickett® or Chipmunk® Rifle Scope Mount Kit it which has a 3/8 dovetail this adapter may be 1/16 of an inch too wide to securely clamp to the rail. Manufacturers tend to round rail widths, I this this will work. Worst case a small shim could be used to bridge the gap. **Q: Will this fit on a crosman 357 snr?** A: I do not believe that the crossman 357 snub nose pistol has a dove tail rail. The owner's manual does not make mention of this and the rail is not called out on the photo graph of the pistol. **Q: Day 2 on a next day delivery for prime. still hadn't shipped. bait and switch game with smazon.** A: Shipping delays can occur - with the current shipping company labor action on the horizon 2 of my orders in the past two weeks (12 items total) were delayed. Annoying but Prime is still far better than other vendors for next day deliveries. **Q: Will this fit a Molson nagant** A: My gut is telling me no, however while I don't own a Molson I know someone who does, and he has an adapter on it, which is also a universal Picatinny Rail(also no). If you have a Archangel M-1891, I would also say no it won't fit. This is probably meant for small rail set-up like BB gun or Sidearms. ## Frequently Bought Together - 11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter - CVLIFE 1X22X33 Red Green Dot Gun Sight Scope Reflex Sight with 20mm Rail - Feyachi Reflex Sight - Adjustable Reticle (4 Styles) Both Red and Green in one Sight! --- ## 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.tn/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws](https://www.desertcart.tn/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-19*