Quick Summary
This 2PCS 100mm Rail Mount is a dovetail rail extension adapter with a 9 slot top rail and both high profile and low profile base options. It is designed to convert an 11mm dovetail to a 21mm rail, giving a longer mounting area for scopes, red dots, or other accessories.
Who It Is Best For
This suits buyers who need a rail adapter for 11mm dovetail mounts and want a more flexible mounting position for optics. It is also useful if you want a base with both low profile and high profile options and prefer a simple setup with a stop pin and included Allen wrench.
What To Know Before You Buy
The adapter is described as being made from aircraft grade aluminium alloy with a black hard coat anodise finish. It is listed as 100mm, with a base length of 2.94 inches and a rail length of 3.94 inches. The top rail has 9 slots and is described as a 21mm Picatinny rail.
Pros: It combines 11mm dovetail conversion with a 9 slot top rail and includes both low profile and high profile base options.
Cons: Check your exact dovetail size and selected setup before ordering, as rail fit and profile choice need to suit your mount.
Common Buyer Questions
What does this rail adapter do?
It converts an 11mm dovetail setup to a 21mm rail for mounting compatible optics or accessories.
Does it have a Picatinny style top rail?
Yes, the top rail is described as a 21mm Picatinny rail with 9 slots.
Can I use it for a scope or red dot?
It is described as suitable for standard scopes, red dots, or other accessories that fit the rail.
Is installation meant to be simple?
It is described as easy to install using the dovetail mount, a vertical stop pin, and the included Allen wrench.
Should I check the fit before ordering?
Yes, it is sensible to check your dovetail size and chosen profile so the adapter suits your setup.
Key Details
| Detail | What it means in use |
|---|---|
| Quantity | 2 pieces |
| Rail size | 11mm dovetail to 21mm rail conversion |
| Top rail slots | 9 slots for accessory placement |
| Profile options | Low profile and high profile base options are listed |
| Material | Aircraft grade aluminium alloy |
| Finish | Black hard coat anodise finish |
| Included fitting aid | Allen wrench is mentioned for installation |
Final Buying View
If you need an 11mm dovetail to 21mm rail adapter with a 9 slot top rail, this 2 piece mount gives you a practical way to add more mounting options. The included low profile and high profile choices make it easier to match different setups, while the stop pin and Allen wrench add convenience. Check your rail size and preferred profile before ordering, then choose the version that suits your mount.





