---
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: "₨7498"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws
store_origin: LK
region: Sri Lanka
---

# 3.94-inch rail length 3 built-in locking screws Recoil-resistant stop-pin 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:** ₨7498
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your aim with precision and zero compromise!

## 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?** ₨7498 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/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

- • **Expanded 9-Slot Rail Space:** 3.94-inch rail with 9 slots and 0.59-inch saddle height offers snag-free mounting for all your tactical optics.
- • **Aircraft-Grade Aluminum Build:** Precision-machined solid aluminum alloy with matte black anodized finish ensures durability and sleek stealth.
- • **Lock It Down with Triple Screws:** Three high-strength locking screws guarantee a rock-solid, no-slip mount under recoil.
- • **Recoil-Resistant Zero Retention:** Integrated stop-pin prevents sliding, maintaining your zero shot after every trigger pull.
- • **Seamless Dovetail to Picatinny Conversion:** Effortlessly upgrade your 11mm dovetail to a versatile 21mm Picatinny rail for ultimate optics flexibility.

## Overview

This 11mm to 21mm Picatinny rail converter base by Bontok is crafted from aircraft-grade aluminum with a matte black anodized finish. Featuring a 3.94-inch length with 9 slots, triple locking screws, and a recoil-resistant stop-pin, it ensures a secure, zero-retentive mount for your optics. Perfect for professionals seeking reliable, flexible firearm customization.

## Description

11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter

## 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 |
|---------------|-------|
| Item Package Dimensions L x W x H | 6.02 x 1.85 x 0.71 inches |
| Package Weight | 0.07 Kilograms |
| Brand Name | Bontok |
| Warranty Description | 90 Days Warranty |
| Color | Black |
| Number of Items | 1 |
| Manufacturer | Bontok |
| Style | 1 Pack-9 Slots |
| Size | 9 Slots |

## 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 **Color, Size, Number of Items** 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
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**Shop now:** [https://www.desertcart.lk/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws](https://www.desertcart.lk/products/517372141-bontok-11mm-dovetail-to-21mm-upgraded-build-in-locking-screws)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-24*