Quick Summary
The RALSPEC Cantilevered 20mm to 20mm Picatinny Weaver QD Scope Rail Adapter is a rail mount for adding one 20mm rail to an existing 20mm rail base. It has a cantilevered layout, 14 slots, and a stated height increase of 11 mm.
The rail section measures 20 mm wide by 145 mm long, with an 80 mm cantilever. It is made from T6061 aluminium alloy and finished in hardcoat anodised matte black.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | 20mm to 20mm Picatinny Weaver rail adapter mount for extending an existing rail base. |
| Slots | 14 slots on the top rail, which affects how much accessory positioning space is available. |
| Rail size | 20 mm wide x 145 mm long, with a cantilever of 80 mm. |
| Height increase | Raises the existing rail height by 11 mm. |
| Material | T6061 aluminium alloy. |
| Finish | Hardcoat anodised matte black. |
| Weight | 79 g. |
| Included items | 1 x cantilevered rail mount and 1 x hex key. |
What to Compare Before Buying
- Rail size: This mount is for 20mm to 20mm use, so match it to the rail system you already have.
- Slot length: The top rail has 14 slots and a 145 mm length, so check whether that gives enough positioning room for your optic or accessory.
- Cantilever: The 80 mm cantilever changes how far the rail section extends forward, so compare that with your mounting position needs.
- Height: The mount adds 11 mm of height, which affects the final optic or accessory position.
- Included fitting: The package includes a hex key, so check whether any other fitting items are needed for your setup.
What Is Included
- 1 x cantilevered rail mount
- 1 x hex key
Before You Decide
Check that you need a 20mm to 20mm rail adapter, not a different rail size or mount type. Also confirm the 14-slot length, 80 mm cantilever, 11 mm height increase and included hex key match your setup.





