Description
FOCUS 11mm Dovetail to 20mm Picatinny/Weaver Rail Adapter (2-Slot, Low Profile) – R57
Convert an 11mm dovetail rail to a 20mm Picatinny/Weaver platform in seconds with the FOCUS R57 adapter. This solid, low-profile machined aluminum block gives you instant compatibility with a much wider range of rings, red dots, scopes, and rail accessories—without replacing your original base rail. Supplied with mounting hardware so it’s ready to fit out of the box.
Key Features
- 11mm to 20mm Rail Conversion: Clamps onto an 11mm dovetail and provides a 20mm Picatinny/Weaver top rail
- 2-Slot Picatinny Top Rail: Compact rail section for standard Picatinny/Weaver mounts
- Machined Aluminum Alloy Body: Strong, stable, and built to hold position under regular use
- Black Anodised Finish: Corrosion-resistant finish for outdoor conditions
- Secure Hex-Screw Clamping: Side-mounted hex screw locks firmly to reduce rocking or shift
- Low-Profile Design: Minimal added height keeps optics closer to the bore for a natural sight picture
- Hardware Included: Comes complete with screws and hex key—no extra tools needed
Technical Specifications
- Model: R57
- Input Rail (Base): 11mm dovetail
- Output Rail (Top): 20mm Picatinny / Weaver
- Top Rail Slots: 2-slot Picatinny
- Top Rail Width: 20mm
- Dovetail Base Width: 11mm
- Material: Machined aluminum alloy
- Finish: Black anodised
- Clamping Mechanism: Side-mounted hex screw
- Estimated Weight: ~30–40g (adapter + hardware)
Perfect For
- Upgrading an 11mm dovetail setup to run Picatinny/Weaver optics and mounts
- Compact builds where you want minimal height increase
- Users who want a simple, secure converter without changing the base rail
What’s in the Box
- 1 × 11mm to 20mm rail adapter body
- 1 × clamping base plate
- 2 × flat-head hex screws
- 1 × Allen/hex key wrench
Why Choose the FOCUS R57?
It’s a clean, low-profile way to unlock 20mm Picatinny/Weaver compatibility on an 11mm dovetail rail—simple to fit, solid in use, and ready to mount straight out of the box.