LONSEL

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

Name: LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm Picatinny Rail Convert Mount - Low Profile Scope Riser Rail Adaptor - Base Mount 3/8"
Brand: LONSEL
SKU: B0982V87YJ
Price: 6.98 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$6.98

As an Amazon Associate, SpecPicks earns from qualifying purchases.

🛒 See live eBay price Also on Amazon → Compare to similar graphics & video

*Price sourced from Amazon.com. Last updated 2026-08-28. Price and availability subject to change.

Bottom line: The 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 is a niche pick — read recent reviews before buying in the graphics & video category, priced around $6.98. Compare close alternatives before committing.

The LONSEL Dovetail to Picatinny Rail Adapter solves one specific mounting problem: your receiver has an 11mm (3/8 inch) dovetail groove, but the optic you want uses a 21mm (7/8 inch) Picatinny footprint. This adapter bridges the two. The base measures 2.94 inches and carries a 3.94-inch top rail with 9 Picatinny slots, so you can slide a scope, red dot, or other accessory fore and aft until eye relief is right instead of settling for one fixed position. LONSEL machines the adapter from aircraft-grade aluminum alloy and finishes it in matte black hard-coat anodizing, which keeps added weight…

SpecPicks Verdict

SpecPicks scored LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the graphics & video category. LONSEL's graphics & video lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for graphics & video of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by LONSEL's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key 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.

Full Specifications

Brand	LONSEL
Color	‎Black
Style	‎1 PACK - 9 Slots
Material	‎Aluminum
Mount Base	Fit 11 mm dovetail mounts, Base mount 3/8" to 7/8" converter adapter. Low profile 0.59" riser rail for scope.
Package Weight	‎0.06 kg
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.
Precision Material	Premium out of aircraft grade aluminum alloy and black hard coat anodize finish, sturdy & durable.
Top With 9 Slots Style Rail	Top 21mm picatinny rail allows for the mounting of picatinny standard scopes, red dots or other accessories.
Item Package Dimensions L x W x H	‎5.83 x 3.15 x 0.75 inches

Ready to buy?

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 is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

See live eBay listings →

*Price sourced from Amazon.com. Last updated 2026-08-28. Price and availability subject to change.