Thumb Stop FabDefense VTS-M M-LOK — Green

The VTS-M is a rubberised polymer thumb stop made by FabDefense, designed for mounting on M-LOK rails. Measuring 45 mm in length, 25 mm in width and 28 mm in height, it provides a fixed tactile reference point for the thumb of the support hand, improving grip consistency during repeated firing.

A consistent thumb position reduces grip variability between shots: when the support hand always finds the same contact point, weapon alignment improves without conscious effort. The thumb stop does not replace grip ergonomics — it complements them by adding an anchor that automatically orients the hand when working the action or after a rapid reload.

The high-strength rubberised polymer weighs just 20 g and absorbs some of the vibration, preventing the discomfort of direct contact between the thumb and the hard rail surface during extended sessions. The M-LOK attachment ensures direct compatibility with cross-bolt locking systems, which offer very stable retention but require tools to reposition — this is not a stop intended for frequent repositioning during operational use.

Key Features

• The fixed thumb contact point increases grip repeatability and reduces variation between successive engagements.
• The rubberised polymer at 20 g adds no meaningful weight to the platform and softens the hard rail feedback on the thumb.
• M-LOK mounting guarantees compatibility with most handguards and modern rail systems.
• The compact dimensions (45x25x28 mm) do not interfere with accessories already fitted to the rail.
• The green colour integrates with camouflage configurations without requiring additional finishing.

In the Box

• FabDefense VTS-M M-LOK Thumb Stop