Description
MDT built this 8.6-inch M-LOK Picatinny rail for folks who need more mounting space on their bolt gun without adding bulk. It gives you 19 slots of MIL-STD-1913 real estate for bipods, monopods, hand stops, weights, or whatever your setup calls for, plus a built-in QD flush cup so you can clip a sling on and off in seconds. The whole thing is CNC machined from 6061-T6 aircraft grade aluminum and finished with a Type III hard anodize, so it shrugs off the abuse that comes with range days and hunts.
What the 8.6" M-LOK Rail Brings to the Bench
The rail runs MIL-STD-1913 and STANAG 4694 spec, so accessories seat the way they're supposed to. Laser etched position markers along the length make it easy to note exactly where your bipod or bag rider lives and get right back to that spot after you pull it off. The profile is contoured to stay snag-free, which matters when you're moving between positions or working out of a pack. At just 9.4mm (0.370") tall, it keeps your gear low and close to the forend.
Fitting the Rail to Your MDT Setup
This is a natural match for MDT chassis systems and forends, including popular platforms in their lineup, and it works with any M-LOK compatible handguard. It mounts to the underside of the forend for a bipod or monopod, or along a side slot for a sling point. Everything you need to install it comes in the box, so you can have it torqued down and squared away in a few minutes with basic tools.
Between the integrated flush cup and the generous slot count, the 8.6-inch length hits a sweet spot for precision rifle builds where you want room to slide accessories fore and aft to dial in balance. It's a straightforward, well-made piece that does exactly what a good rail should.
Key Specifications
- Manufacturer: MDT
- Manufacturer Part Number: 103459-BLK
- UPC: 709951103265
- Length: 8.6 inches
- Slots: 19
- Material: 6061-T6 Aircraft Grade Aluminum
- Finish: Mil-Spec Type III Hard Anodized
- Color: Matte Black
- Rail Spec: MIL-STD-1913 & STANAG 4694
- Mounting: M-LOK Compatible
- Sling Mount: Integrated QD Flush Cup
- Height: 9.4mm (0.370 in)
- Product Type: M-LOK Picatinny Rail
What’s Included
- MDT 8.6" M-LOK Picatinny Rail with integrated QD flush cup sling mount
- 10/24 flat head screws (1/2" length)
- M-LOK nuts
Frequently Asked Questions
What will the 8.6" M-LOK Picatinny rail fit?
It's designed to bolt onto any M-LOK compatible handguard or forend, and it's a natural fit for MDT chassis systems and buttstocks. The included M-LOK nuts and screws let you mount it to the underside of a forend for a bipod or along a side slot for a sling point. If your platform runs M-LOK slots, this rail will interface with it.
Does this rail come with a flush cup sling mount built in?
Yes, this 8.6-inch version has an integrated QD flush cup machined right into the rail. That means you can attach a push-button QD sling swivel directly without adding a separate mount. It gives you a quick, secure sling connection that clips on and off in seconds.
How many slots does the 8.6" M-LOK Picatinny rail have?
This rail gives you 19 Picatinny slots across its 8.6-inch length. That's plenty of room to slide a bipod, monopod, or bag rider fore and aft to balance your rifle exactly how you want it. The laser etched position markers make it easy to return an accessory to the same spot every time.
What's the rail made from and how tough is it?
It's CNC machined from 6061-T6 aircraft grade aluminum and finished with a Mil-Spec Type III hard anodize. That combination keeps it light while standing up to hard use in the field and at the range. The contoured profile also helps it stay snag-free when you're moving around.





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