Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Geissele Super MK4 M-LOK Handguard
As Low As $259.99 Save Up to 13%
View Product
Compare (0)
Most Helpful Positive Review Rock solid forend
I did plenty of research before deciding on the Geissele MK4. Others required weird adhesives or strange mounting. This one had a very nice barrel tube nut and I really liked the "bomb proof" roll pin on the gas block. The install manual is easy to follow and explained how to not only use the set screw on the gas block (drilling small pilot holes for them to sink into), but it also detailed how to drill a 3/16" hole in the bottom of the gas block and install a roll pin, that makes it virtually indestructible. Overall, the fit and finish is perfect and exactly what I was looking for. I was wor...
Read More...
Show
Sort by
Filter by

Great product

by Asian, Verified Owner from NC, United States Written on January 4, 2026
As expected of geissele product. Fit a finish excellent, love the look and feel. Only complaint is they couldn't include an 8 dollar tool.� for the price. Definitely recommended and would buy another �
Pros:
  • ALL THE ABOVE
Cons:
  • No $8 wrench for the price
Best Used for:
  • AR 15
Would recommend: Yes
Was it helpful to you? Yes | No

Nice fitment

by clark, Verified Owner from FL, United States Written on September 10, 2025
I have a 13.9” Criterion barrel and this hand guard on my AR15 that I built. With my yankee hill srx muzzle brake and the R9 Suppressor. The fitment is perfect.
Would recommend: Yes
Was it helpful to you? Yes | No

Great hand guard

by Arlo, Verified Owner from FL, United States Written on January 4, 2025
For me, I like the modular design of the hand guard and how it’s M-LOK with a quads rail on the end.
Pros:
  • Fits good on a 14.5 upper
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Great Quality, Sturdy

by CM, from ID, United States Written on April 22, 2024
This thing is quite rigid for mostly being mlok. Has a great mounting system. Only thing is that the barrel nut is aluminum and pretty soft if you make a slip while torquing it. I marred mine pretty bad with 1 slip. I was surprised at the chunk of aluminum that came off. Still works fine and lockup is great.
Pros:
  • Rigid and lightweight
Cons:
  • Soft aluminum barrel nut
Would recommend: Yes
Was it helpful to you? Yes | No

Great handguard

by Ronoc, Verified Owner from NY, United States Written on April 12, 2024
As with every G product. This is a great handguard.
Would recommend: Yes
Was it helpful to you? Yes | No

Excellent quality

by Julian Banning, Verified Owner from TX, United States Written on April 1, 2024
I was hesitant at first with how much more expensive this hand guard is compared to others. Once it arrived I couldn’t have been happier. This hand guard just feels like quality, and makes my firearm feel and look brand new. Highly recommend.
Pros:
  • Quality
  • Craftsmanship
Cons:
  • price
Would recommend: Yes
Was it helpful to you? Yes | No

Geissele MK8 Rail

by Skeds, Verified Owner from PA, United States Written on February 23, 2024
Best rail you can get. Anything Geissele. Best fit and finish. Expensive but worth it. Will not be dissatisfied with any Geissele rails. I’ll be buying more of them
Pros:
  • Lightweight
  • Strong
  • Precice
Cons:
  • Pricey
Best Used for:
  • Professional
Would recommend: Yes
Was it helpful to you? Yes | No

be aware. doesn't come with barrel nut tool

by AF, Verified Owner from WA, United States Written on April 11, 2023
Its a really really nice and beautiful handguard. Top tier brand top tier quality. But it doesn't come with a MSRP $10 tool..... Come on Geissele. Bump the price up a little and include the tool please. optics planet doesn't have it in stock. Had to purchase it from other website pay extra for shipping.
Would recommend: Yes
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Absolutely one of the best handguards on the market

by EA, Verified Owner from MN, United States Written on September 1, 2022
Geissele is known for making some of the highest quality parts for AR platforms. Their triggers and handguards are simply the best! I love their DDC compared to regular FDE. This rail is very lightweight, strong and looks absolutely fantastic! If you’re on the fence, climb on down and pull out your wallet! �
Pros:
  • Everything
Cons:
  • None
Best Used for:
  • Any quality ar build
Would recommend: Yes
Was it helpful to you? Yes | No

One of the best rails available

by Andy, Verified Owner from VA, United States Written on April 1, 2022
I have put a lot of AR uppers together. Pairing this rail with a build always goes well. Ease of installation and a rock solid mount. Good rail space and I like the front pic rails for using a bipod. There are newer rails out and there are cheaper ones too. This one just works. Pick it up when it goes on sale though!
Would recommend: Yes
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?