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Reptilia built this handguard for folks who want their AR to stay put once it's zeroed. The 10.5-inch length is a sweet spot for carbine and SBR-style builds, giving you plenty of real estate for a light and a hand stop without turning your rifle into a boat anchor. At roughly 9 ounces, it keeps the front end nimble while the slim 1.3-inch profile fills the hand nicely whether you're running bare or gloved up.
Instead of the usual wedge or clamp setup, Reptilia went with a patented barrel nut and turnbuckle locking system. The barrel nut torques to 50 ft-lbs and the turnbuckle nut snugs down hand-tight with red thread locker, and the combo delivers a genuinely repeatable, no-flex lockup. Anti-rotation tabs work off the upper receiver to keep everything in alignment over the long haul, which is exactly what you want when you've got an IR laser or a thermal riding up top and can't afford a shift in zero.
You get full-length M-LOK slots at the 3, 6, and 9 o'clock positions plus a continuous Picatinny top rail that lines up with your flat-top upper. That means uninterrupted space for optics, backup irons, and night vision, with M-LOK handling your bipods, grips, lights, and QD sling points down the sides and bottom. The free-float design keeps the rail off the barrel so your harmonics and accuracy stay honest.
This one is CNC-machined from 6061-T6 aluminum and finished in MIL-STD Type III hardcoat anodizing, here in a Flat Dark Earth that pairs well with just about any modern build. It's made in the USA and carries Reptilia's lifetime warranty against manufacturer defects. The barrel nut and installation hardware come in the box, so once you've got the right tools you're set to build.
Yes, this handguard is designed to fit standard AR-15 platforms and all standard M4 upper receivers. It uses Reptilia's proprietary barrel nut and turnbuckle system along with anti-rotation tabs that reference off the upper for alignment. As with any free-float rail, just make sure your barrel profile and gas system clear the tube before ordering.
The handguard ships with the required barrel nut, turnbuckle, and installation hardware, plus Reptilia's turnbuckle wrench. Installation uses a 1-1/4 inch drive for the barrel nut, a 1/4 inch drive for the turnbuckle, and a 3/8 inch socket drive for a torque wrench. The barrel nut torques to 50 ft-lbs and the turnbuckle nut goes on hand-tight with red thread locker.
This length comes in right around 9 ounces (255 grams), so it keeps the front end light and quick-handling. The slim 1.3-inch profile and CNC-machined 6061-T6 aluminum construction keep weight down without giving up strength. It's a good match for carbine, SBR, and large-format pistol builds where balance matters.
You get full-length M-LOK slots at the 3, 6, and 9 o'clock positions for lights, lasers, grips, bipods, and QD sling mounts. A continuous Picatinny rail runs across the top for optics, backup sights, and night vision or thermal setups. The free-float design also keeps the rail off the barrel to help preserve accuracy.
| UPC | 850053448997 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 100-357 |
| Color | Flat Dark Earth |
| Product Type | Handguard |
| Model |
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