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The Geissele Super Modular Rail MK15 was built to replace the factory handguard on HK416 and MR556 rifles without reinventing your whole setup. It installs on the stock HK barrel nut, so you keep the platform you know while gaining the kind of stiffness and mounting real estate that Geissele is known for. This 14.5 inch version runs an actual rail length of roughly 13.625 inches and is optimized for a 14.5 inch barrel, giving you a clean, free-floating front end that lets the barrel do its job without handguard pressure throwing off your zero.
Machined from 6061-T6 aluminum and finished in a Type 3 hardcoat anodize, this rail is designed to take a beating. The Desert Dirt Color finish isn't just for looks either, it's a blend of desert-terrain shades meant to break up the outline of your rifle in the field. At around 14.2 ounces, it keeps the front end manageable so your rifle stays quick to handle and balanced when you've got gear hung off it.
M-LOK slots run at the 3, 6, and 9 o'clock positions, giving you plenty of room to add lights, grips, bipods, and sling hardware exactly where they make sense for you. Up top you get a full-length Picatinny rail plus shortened Picatinny sections on the forend, so mounting optics, backup irons, or a night vision setup is straightforward. The 1.35 inch internal diameter clears low-profile gas blocks without a fuss.
The SMR MK15 was developed with input from elite warfighters, and the Super Modular Rail line has been adopted by U.S. Special Operations Command. That pedigree shows in the fit and finish. Whether you're building an MR556 clone, refreshing an HK416, or just want a rail that won't flinch under hard use, this one earns its keep on the range and beyond.
The SMR MK15 is designed to replace the standard rail on HK416 and MR556 weapon platforms. It installs directly onto the stock HK barrel nut, so you don't need to swap out the factory nut to run it. This makes it a solid choice for MR556 builds, HK416 setups, and clone projects.
No, that's one of the big selling points. The Geissele SMR MK15 uses the stock HK barrel nut rather than requiring a special one, which keeps installation simpler. One thing to keep in mind: if your HK upper has sling loops on the outside of the gas block, they'll need to be removed for the rail to fit, and that's best handled by a qualified armorer.
You get M-LOK slots at the 3, 6, and 9 o'clock positions along the length of the rail for lights, grips, bipods, and sling attachments. Up top there's a full-length Picatinny rail plus shortened Picatinny sections on the forend for optics and backup irons. The 1.35 inch inner diameter also clears low-profile gas blocks.
It's machined from 6061-T6 aluminum with a Type 3 hardcoat anodize finish and meets military specifications. The Super Modular Rail line was developed with feedback from elite warfighters and has been adopted by U.S. Special Operations Command. In short, it's built to hold up under real-world abuse.
| UPC | 810081131018 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 05826S |
| Color | DDC |
| Length | 14.5'' |
| Model | |
| Style | M-LOK |
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