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The MDT Adjustable Thumb Rest M-LOK is one of those small upgrades that quietly changes how your rifle feels. Instead of hunting around for where to put your support hand or grabbing the barrel and forend, you get a fixed, textured shelf that puts your thumb in the same spot every single time. That repeatability is what separates a steady position from a shaky one, especially when you're building off a bag, barricade, or tripod.
This is a favorite in the PRS and NRL crowd for a reason. When you're on the clock moving between positions, you don't have time to rebuild your grip from scratch. Mount this along your M-LOK fore-end and your support-hand thumb lands on the same index, letting the rifle settle predictably shot after shot. Users have run it right next to a white light button, on a handguard, and even up by the pistol grip on an MDT LSS Gen3 chassis. It's genuinely versatile in where you can place it.
The angle adjustment is the part people appreciate most. Everyone holds a rifle a little differently, so being able to tune the shelf to your natural hand position makes the difference between something that just sits there and something that actually helps you control the gun. The aggressive molded texture keeps your thumb planted so it won't slide off under recoil or when your hands get sweaty.
It drops into any standard M-LOK slot, so it plays nice with most chassis systems, stocks, and handguards on the market, including MDT's own ESS and LSS-XL lines. Installation is straightforward with the included hardware and takes just a few minutes with a hex wrench. It's a simple, purpose-built piece that does exactly what it promises without adding noticeable weight to your setup.
It mounts in any standard M-LOK slot, so it works with the vast majority of chassis systems, stocks, and handguards that use M-LOK, including MDT's own ESS and LSS lines. As long as you have an open M-LOK slot where you want to rest your thumb, you're good to go. Placement is up to you, whether that's on the fore-end, the handguard, or near the pistol grip.
Not at all. It comes with the hardware you need and installs with a common hex wrench in just a few minutes. Slide it into your chosen M-LOK slot, snug it down, and set your angle.
It shines in precision and positional shooting like PRS and NRL, where a repeatable support-hand position matters. It gives your thumb a consistent home so the rifle settles the same way every time, which helps when you're shooting off bags, barricades, or a tripod. It works just as well for range days and general precision practice.
Yes, that's a big part of what makes it useful. The angle adjusts so you can dial the shelf to match your natural hand position rather than forcing your grip to conform to a fixed shape. Once it's set where you like it, the textured surface keeps your thumb from slipping.
| UPC | 682157403295 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 106900-BLK |
| Color | Black |
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