11mm Dovetail to 21mm Picatinny Rail Adapter – 50mm

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11mm Dovetail to 21mm Picatinny Rail Adapter – 50mm

A 50 mm conversion adapter listed for 11 mm dovetail and 21 mm Picatinny interfaces. Confirm rail dimensions and mounting fit before quotation. For a confirmed quotation, send the product link, required quantity, destination and any specification or packaging requirements.

Description

11mm Dovetail to 21mm Picatinny Rail Converter — Unlock Full Accessory Ecosystem

Key Features

  • Full 21mm Picatinny Rail: Unlike narrow adapters, this converter provides the full 21mm Picatinny width — compatible with all MIL-STD-1913 accessories, from red dots to bipods to magnifiers.
  • 11mm Dovetail Base: The precision-machined dovetail clamp engages 11mm rails on air rifles, .22 LR rifles, and European sporting rifles with full surface contact. Zero wobble, zero shift.
  • Extended Rail Length: Generous rail length accommodates scope rings with proper eye relief adjustment or multiple accessories in tandem — red dot plus magnifier, or scope plus backup sight.
  • Hardened Steel Locking Screws: Multiple set screws bite into the dovetail grooves providing positive mechanical lock. The screws are hardened to resist stripping and maintain clamping force through heavy recoil.
  • Stop Pin: Removable stop pin engages the factory dovetail stop hole for additional recoil resistance — essential for spring-piston air rifles with bidirectional recoil pulses.

Our Take

We’ve had this in our test rotation for a few months, and here’s what stands out:

Technical Specifications

Specification Detail
Input 11mm Dovetail Rail
Output 21mm Picatinny (MIL-STD-1913)
Material Aluminum Alloy + Hardened Steel Screws
Locking Multi-Point Set Screws + Stop Pin
Compatibility Air Rifles, .22 LR, European Sporting Rifles