We know the frustration of flimsy plastic gear that fails when you need it most. We built the UDAPT Aluminum MUM Rail J-Arm to give you a rock-solid, no-compromise link between your minirail monocular and a dovetail mount. Engineered from rugged 7075 aluminum and titanium, this articulating adapter ensures your expensive optics stay secure, exactly where you need them.
BUILT FOR REAL-WORLD CONDITIONS
Designed and battlefield-proven in the largest war since WW2, this J-arm eliminates the fatal flaws of cheap adapters. It won't break under impact like plastic bayonet models, and the articulating joints protect your neck during collisions. Every detail is focused on absolute reliability and seamless performance under stress.
AT A GLANCE
- Rock-Solid Connection: The adjustable dovetail shoe interface completely eliminates play and wobble in any common mount.
- Articulating Design: Quickly swing the monocular away from your eye or switch between left and right eyes with a single, fluid motion.
- Low-Profile Stowage: The device folds tightly against your helmet when stowed, preventing snags on branches or vehicle doors.
- No-Compromise Materials: Machined from rugged 7075 aluminum, with titanium joints and stainless steel hardware.
ATTENTION TO DETAIL
- Optimal Eye Relief: The offset mounting position ensures the monocular fully reaches your eye, shielding your face from light splash.
- Gas Mask Compatible: Flip the central mounting section to instantly gain 10mm of extra clearance for respirators or heavy face masks.
- Bungee Retention Loop: An integrated loop lets you tie down the rig to completely lock out any remaining movement.
- Tool-Free Operation: A single captured screw with a handle lets you mount or remove your optic in seconds.
COMPATIBILITY
- AGM NVM-40, NVM-50, Wolf 14
- Archer NVMA-14
- Armasight MNVD, NYX-14, Prime, Sirius, Spark
- ATN NVM14, N-14, NYX-14
- Dipol D128
- Mercury Technology MT-GEKKO-PRO
- Nanjing Rising Photonics NRP RM2021
- Newcon Optik NVS 14, NV 207, TVS 11M
- Nivisys MUM-14
- Dedal 370
- COT NVM-14
- UDAPT F25
- Wilcox G22, G24, G30, G37, G69, G70
- Norotos AKA2, INVG, LoSto
- Other common dovetail-style mounts
SPECIFICATION
- Materials: Anodized 7075 Aluminum, TC4 Titanium, Stainless Steel
- Dimensions: 104x50x26 mm
- Weight: 50 g / 1.8 oz
WHAT'S IN THE BOX?
- UDAPT MUM Rail J-arm Adapter
- Mounting Screws
- Allen Key
- User Manual
MADE IN UKRAINE
Built from real-world needs. Engineered without compromise.
A Note for Our International Customers
When you buy from UDAPT, you're getting more than just gear—you're getting a battle-proven solution. Every product we offer is designed, tested, and perfected here in Ukraine, based on direct feedback from the most demanding conditions imaginable. We're proud to share our reliable, operator-focused equipment with you, no matter where you are in the world.
- Worldwide Shipping: We ship globally for a flat fee of $15 USD via Priority Mail. You can find the official estimated delivery times to your country here
- Secure Payments: We accept Visa and Mastercard through a secure payment gateway provided by a major European bank. If you would prefer to use PayPal, please contact us via email or messenger and we will be happy to arrange it for you.
We look forward to equipping you!
