Description
M-LOK is great for keeping your handguard slim and snag-free, but sooner or later you run into an accessory that only comes with a Picatinny mount. That's where this GrovTec 6-inch rail section earns its keep. It bolts straight onto any M-LOK-compatible handguard and gives you a proper MIL-STD-1913 rail to work with, so you're not left hunting for adapters or leaving gear on the shelf.
What the GrovTec 15-Slot M-LOK Rail Brings to Your Setup
This piece is precision CNC machined from lightweight, solid aluminum and finished in a Type III black hard anodized coating, which is the same class of finish you'll find on quality handguards and receivers. That means it holds up to handling, weather, and general abuse without wearing through. At 6 inches with 15 full slots, you've got enough real estate to run a longer accessory or spread a couple of smaller ones out with breathing room, and the extra length gives you a wide range of adjustment for dialing in eye relief on optics.
Mounting the GrovTec 6-Inch Rail Section
GrovTec keeps installation simple by including the mounting hardware and an Allen key right in the package, so you can get it on the rifle without a trip to the parts drawer. The rail sits low against the handguard for a clean profile, and the beveled ends are cut to knock down sharp corners and cut down on snagging when you're moving through gear, brush, or a cramped space.
If you shoot an AR or any modular platform running an M-LOK forend, this is one of those small, no-drama upgrades that just makes your rifle more versatile. It plays nice with lasers, sights, scopes, weapon lights, vertical grips, and just about anything else built to the 1913 standard, giving you a dependable place to mount it without changing out the whole handguard.
Key Specifications
- Manufacturer: GrovTec
- Manufacturer Part Number: GTSW239
- Model: 6 Inch 15 Slot M-LOK
- UPC: 811071012393
- Product Type: M-LOK to Picatinny Rail Section
- Rail Standard: MIL-STD-1913 Picatinny
- Mounting System: M-LOK
- Length: 6 inches
- Slots: 15
- Material: Solid Aluminum, CNC Machined
- Finish: Type III Black Hard Anodized
- Color: Black
- Shipping Weight: 0.165 lb
What’s Included
- 6" 15-Slot M-LOK Picatinny rail section
- Mounting hardware
- Allen key
Frequently Asked Questions
What does the GrovTec 6-inch M-LOK rail section actually do?
It converts a section of your M-LOK-compatible handguard into a standard MIL-STD-1913 Picatinny rail. That lets you mount Picatinny-based accessories like lights, lasers, optics, and vertical grips directly onto an M-LOK forend. Think of it as a bridge between the two mounting systems.
Will this rail fit my handguard?
This section is machined to fit any handguard or forend that uses the M-LOK mounting standard. As long as your rifle's handguard has M-LOK slots, this bolts right on. It's a common fit across AR platforms and many other modular rifles.
Do I need extra tools or parts to install the GrovTec 15-slot rail?
No, GrovTec includes the mounting hardware and an Allen key in the package, so it's ready to go out of the box. You just line it up with your M-LOK slots and tighten it down. Most folks have it mounted in a couple of minutes.
Is aluminum durable enough for a rail section?
Yes, this rail is CNC machined from solid aluminum and wears a Type III hard anodized finish, which is the same tough coating used on quality handguards and receivers. It gives you a strong, lightweight mounting surface that holds up to regular use. The beveled ends also help cut down on sharp corners and snagging.





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