Description
The MDT M-LOK ARCA Rail turns any M-LOK forend into an ARCA-Swiss / RRS-dovetail interface, the standard for attaching a rifle to tripod heads, ARCA bipods and support gear. It is machined from 6061-T6 aluminium and Type III hard anodised, with a solid M-LOK boss to take repeated recoil, 14 drilled and tapped holes for indexing accessories, a rearward overhang so the tripod clamp sits closer to the rifle’s centre of gravity, an angled front to ease tripod engagement and rounded edges for shooting unsupported. It fits MDT ESS, LSS-XL Gen2, ACC, HNT26 and any other M-LOK stock, chassis or handguard. This 3GT listing covers the 3.3 in, 7 in, 8.6 in and 10.25 in versions.
Key features
- ARCA-Swiss and RRS dovetail compatible clamp surface
- 6061-T6 aluminium, Mil-spec Type III hard anodised black
- 14 drilled and tapped holes for indexing accessories
- Rearward overhang and angled front for easier tripod engagement
- Solid M-LOK boss; M-LOK hardware included
- Lengths: 3.3 in (103416), 7 in (103568), 8.6 in (103570), 10.25 in (103572)
Frequently asked questions
Which length should I choose?
The 3.3 in rail suits a single tripod or bipod clamp near the front of the forend; the 7, 8.6 and 10.25 in rails give room to slide the clamp for balance or to run a bipod and tripod together.
Will it fit a non-MDT stock?
Yes — any stock, chassis or handguard with M-LOK slots. It needs consecutive M-LOK slots matching the rail length.
Is it RRS compatible?
Yes, MDT machines the dovetail to the RRS / ARCA standard used by most tripod heads and ARCA bipods.
Specifications from MDT (mdttac.com).
Firearm parts and accessories are supplied by 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD. No licence is needed to buy chassis accessories, rails or hardware, but check your state’s firearm-parts rules before ordering.






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