MitaPoint 125 mm Picatinny Rail Adapter — 11 mm to 20 mm

Many air rifles, airsoft guns and .22 rimfire firearms still come from the factory with a classic 11 mm dovetail rail. While this standard has served reliably for decades, the vast majority of modern optics, red dot sights and tactical accessories are designed for the wider, more robust 20 mm Picatinny / Weaver system. The MitaPoint 125 mm rail adapter bridges these two worlds — quickly, securely and with minimal height gain.

Design and dimensions

The adapter has a total length of 125 mm with 10 standard Picatinny slots. This provides sufficient surface area for most compact riflescope mounts, red dot bases and other Picatinny-compatible accessories, while also allowing flexibility in positioning the optic along the rail.

• Total length — 125 mm
• Picatinny slots — 10
• Clamping length — 100 mm (including outer edges of clamping blocks)
• Height — 14 mm (rail head to base, without claws)
• Top rail width — 20 mm Picatinny / Weaver
• Bottom clamp — 11 mm dovetail
• Weight — 46 g
• Material — aluminium alloy
• Surface treatment — hard anodizing, black

The 14 mm height is relatively low for this category, meaning the optic axis does not sit unnecessarily high — particularly important for air rifles where ergonomics and natural aiming angle are key to shooting comfort.

Clamping system

The adapter grips the firearm's 11 mm rail at two points: a clamping block and locking screw at each end ensure secure attachment. The split clamping design distributes load evenly along the rail and prevents rotation or slipping during shooting.

The 100 mm clamping length between the two attachment points provides solid support for most air rifle and .22 rail dimensions. The precision-milled clamping surface ensures a tight, play-free fit without damaging the rail surface.

Material quality and durability

The adapter is made from aluminium alloy with a hard anodized surface treatment, offering several advantages:

• Wear resistance — the anodized layer is significantly harder than raw aluminium
• Corrosion protection — adequate protection against moisture and weather
• Aesthetics — matte black finish that suits most modern firearms

The aluminium alloy provides sufficient strength for air rifle, airsoft and .22 LR applications. Its most notable characteristic is the featherlight 46 g weight — exceptionally low for this category — which leaves the firearm's balance and handling virtually unchanged. For higher-recoil centrefire calibres, a more substantial steel-based solution is recommended.

Recommended applications

The adapter is primarily recommended for firearms that come with an 11 mm dovetail rail from the factory and on which a modern Picatinny-compatible optic or accessory is to be fitted:

• Air rifles — spring (recoil), gas piston and PCP systems alike
• Airsoft firearms — those fitted with an 11 mm rail
• .22 LR rifles — semi-automatic or bolt-action
• Red dot sights and compact riflescope mounts — where low profile and low weight matter

Who is it recommended for?

The MitaPoint 125 mm Picatinny rail adapter is ideal for anyone who wants to fit a modern Picatinny-compatible optic to an air rifle, airsoft firearm or .22 LR rifle equipped with an 11 mm dovetail rail — without adding unnecessary weight or raising the optic too high. The featherlight 46 g construction, 10-slot 125 mm rail surface and low 14 mm profile together offer a solution that does not compromise the handling of the firearm. Particularly useful when the firearm's original rail is short and a longer clamping surface is needed for stable optic retention.

Have questions about mounting or compatibility? Feel free to contact us — we are happy to help you find the best solution for your firearm.