Product Description
This is a low-profile, lightweight M-LOK handguard for the AR-15/M16 platform. It is a free-float clamp-on design that looks freaking bada$$. You get a Picatinny rail on top and 3 MLOK rails on the sides/bottom.
It is a 1-piece design that requires the removal and changeout of the barrel nut with the nut that is included. The clamp-on design means that you don't need to time the barrel nut. A 1-1/16" wrench or ideally a crow's foot will be required to tighten the new barrel nut to a torque of 30-50 foot pounds.
Features: Super lightweight Super low-profile Octagonal profile Anti-rotational QD sockets on the side Picatinny on top, M-LOK on the sides and bottom Anodized aluminum body (except Flat Dark Earth, which is painted) Steel barrel nut 40 × 51mm (W × H) along most of the body. Clamping area adds 12mm to height. Inner diameter is 34mm.You get: (1) Handguard of the specified length (1) Steel barrel nut (1) 4mm hex key You need to get separately: AR-15 receiver Compatible with: AR-15/M16 upper variants that use a standard barrel nut M-LOK-attaching picatinny rails M-LOK direct-mount accessories Picatinny accessories for the top rail WK180-C -- just unscrew the factory handguard and clamp on this one (no barrel wrench required). Newer model WK's are very tight and it is recommended to still swap the barrel nut if you have issues MCR - Will work but is very close. May need some dremeling where the piston cup slides back and forth Not compatible with: AR-308 Tools required: 1-1/16" crow's foot wrench, barrel nut grease, upper vice block, and torque wrench strongly recommended. Note that the standard AR-15 armourer's wrench will not work with this barrel nut, you need a 1-1/16" wrench that is narrower than 13mm (½") such as our crow's foot wrench. In a pinch, a strap wrench might do the job if you're ok with not measuring the applied torque. Installation Tips: When you take the handguard out of the box you'll find the barrel nut inside the handguard; an easy way to get it out is to loosen the clamping screws, then screw your receiver a couple of turns into the barrel nut and then pull on the handguard.Product Videos
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nice rail for the price
Another nice cheap product from TNA. Looks and functions just nice. Installed easily on a TNA upper and MLOK accessories that I tried yet fit just nice. I don't have a micrometer on hand to check specs but the picatinny rail on top looks just a tiny bit out of specs (too small) as it won't line up perfectly flush with the upper receiver's rail. My MBUS sights would fit tight on the upper but would slide pretty loose on the handguard. However, once tightened they are rock solid and there really is no issue with function. These rails may not be as "wow" as their 3-400$ counterparts but for a fraction of the cost, it's a no brainer! Will probably buy again for my next build.