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ohhunt

MK18 Handguard Free Float Quad Rail Two-pieces Design AR15 - Black, Coyote Tan, Desert Tan Color

MK18 Handguard Free Float Quad Rail Two-pieces Design AR15 - Black, Coyote Tan, Desert Tan Color

Regular price $80.90 USD
Regular price Sale price $80.90 USD
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Shipping calculated at checkout.

In stock

Length
Color
Ships From

Estimated Delivery Time

Handling Times: 1~2 Days
United States: 10~15 days
Europe: 15~30 days
Asia: 10~15 days
Other Countries: 10~45 days
Ships From: China

This Quad Rail handguard is designed for fitting the MK18, .223 rifles, which is applicable to field combat practically.

  1. Clever Top/Bottom Two-piece Design with Integral Spinal Cords/Alignment Housing for Great Fit, and the Bolt-Up System securely attaches handguard to the upper receiver.
  2. Free-Floating Barrel Design for Increased Accuracy.
  3. Great accomodating capability for the accessories Installed on the rails, and it allows the individual operator to handle freely.
  4. The interrupted Mil-Spec 1913 top Rail Platform with the FSP cutouts provides ample space for optics or includes removable front triangle flip sight. The bottom rail does not have a cutout, not fit for the front sight base with bayonet lug.
  5. Desert Tan color is a lighter tan color than typical FDE (Flat Dark Earth), while Coyote Tan color is darker than FDE. 
  6. Comes with steel barrel nut, screws and allen key.
  • Guide Type: MK18 Handguard.
  • Type: Quad Rail.
  • Compatibility: M4 / M16 / AR15 Spec Rifles.
  • Finishes: Hardcoat Anodized.
  • Top Rail Length FSP Before Cutout: 7.28 inch/85cm.
  • Rail Length: 9.6 inch,12.7 inch.
  • Weight: 17oz(9.6"), 22.4oz(12.7").
  • Width: 2.24".
  • Height: 2.29".
  • Handguard Inner Diameter: 1.2" at its narrowest point,
  • Handguard Materials: 6061-T6 Aluminum.
  • Barrel Nut ID: 1" at its narrowest point, 1.2" at its threaded point.
  • Barrel Nut: 45 Carbon Steel.

Package includes:

  • 1 x MK18 handguard
  • 1 x Steel Barrel Nut
  • Allen wrench & Screws
  • Washers (Use only when needed, not required)

Tools Needed For Installation:

  • Flat-tip screwdriver (not supplied)
  • Armorer's Barrel nut wrench or Castle nut wrench (not supplied)
For mounting instructions please click here.
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Customer Reviews

Based on 75 reviews
76%
(57)
8%
(6)
9%
(7)
3%
(2)
4%
(3)
E
Ed b.a.c.r.
Heavy handrail

These handrails are extremely heavy If you are just looking for cheap quality products then buy one of these. Cheap quality and super heavy.

M
Michael R.
Junk

Messed up my lower receiver, and my upper receiver don’t buy run away spend the money to buy the original

H
Harrison P.
Meh

Took 3.5 weeks to arrive. Seems okay but worried the rails are weak

R
Rico
Great quality

The quality look and feel of this handguard in my opinion is perfect. It gave the look I wanted. It has the feel of a sturdy and high end handguards. well made with quality materials. Now I'm waiting for a mk18 m lok version to come out.

T
Tony J.
Great product

Easy install and sturdy product

B
Brian
Good fitment solid lockup

Put this on a 16" barrel with a carbine length gas system. Looks and functions great. Would love to try the 9.6" FSP cutout in Coyote tan next for a 10.5 build.

J
J F.
Excellent machined part

Sturdy well made and finished! Fits extremely well!

B
Brittain W.
MK-18 DD Clone

It's pretty much the same thing. Slightly different finish.

D
David R.
12.7 "RIS II" rail

I ordered this rail to replace an airsoft (Madbull licensed replica) rail that I modified to fit on a real steel, and was not disappointed with the swap. The build quality is great, the finish is smooth and even, and the rail feels solid like the real DD thing. Install is easy and straightforward (just like the real DD rail), and it took me more time removing the gas block (nice and 5ight to the barrel) than it did to install the actual rail. The only thing to watch out for, as others have said, the barrel nut is a little soft.... I torqued mine to 45 ft/lbs and had to hit the edges of the wrench cutouts with a small jewelers file for a couple quick back and forth swipes, but other than that everything was and is flawless. I'm so impressed by the rail that I actually just ordered the 9.6" FSB today for a new 11.5" build that I'm starting.

T
Tim
Mk18 9.5" FSP cutout

This is a really good handgaurd and I have no regrets buying it. I originally got this as a placeholder for a more serious build because it was going to take some time to find the rail I wanted which is an older Noveske quad rail with a switchblock cut out. Decided to just keep this one and stop looking for the Noveske. If by chance I run into one in the future for a good price I'll jump on it, but as of right now I'm good with the Ohhunt rail. This thing is solid!
There is 1 exception though, the barrel nut; which is the most important piece IMO. There's like O tolerance between the barrel nut and the rail pieces that bolt up to it. It fits in the slot very snug which is usually a good thing, but the material it's made of is soft. Torqued it down to 45 ft/lb and the wrench slots on the barrel nut deformed so it wouldn't fit in the handgaurd. I was able to make it work though. The 6 bolts made it easy pull the rail over the barrel nut. Definitely scraped some aluminum off of the inside of the rail where it mates up with the barrel nut though. Another issue with the barrel nut is that it pins the bolt up plate against the receiver and clocks it slightly to the right causing misalignment with the gas tube hole where the gas tube wont insert into the hole. The fix for this: before torquing the barrel nut down, I put the largest punch I could fit in the gas tube hole in the receiver and then torqued down the barrel nut. Even after this though the rail was still slightly canted. I could've lived with it, but I was more concerned with the integrity of the barrel nut.
So I bought a Daniel Defense Barrel nut (which did not work on it's own because it is slightly shorter than the Ohhunt barrel nut) and a pack of stainless steel 25mmx35mm shims to make up for the shorter barrel nut height. A 1mm shim was all that was needed. It worked out perfect and is solid AF. It was solid with the original barrel nut too, but for piece of mind I'll take the DD barrel nut.