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Guntec USA M-Lok Rubber Insert Covers
$15.99 $14.95 Save $1.04
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Most Helpful Positive Review Cheap upgrade for M-LOK handguards
This is the fourth time I bought this product (first time from Optics Planet). I've used them on several AR-15 M-LOK handguards. I usually don't like unnecessary rails and additions to handguards - I like to keep things light and simple (with the exception of a fixed front sight and a sling mount). However, these little insert covers from Guntec don't stick, don't add any noticeable weight, and make the handguard "grippier". Being "grippy" can be good or bad (for example, grippy handguards can get hung up on cloth, etc) depending on personal preference. So beware that this product may not...
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Looks Can Be Deceiving

by Perfect Fitment, from UT, United States Written on April 6, 2026
I wouldn't blame you if you passed this product over because of the crappy photos as I almost did the same thing, but then I actually read the reviews and quite a few of them said that the quality was a lot better than the photos portrayed. I was looking for some M-Lok covers that didn't cover up the color of my handguard and I didn't want something that was bulky or a hard plastic either and then I found these. They are exactly what I was looking for. They're grippy and fit perfectly in the M-Lok slots, but they don't cover up the color of my handguard. The only downside is that they can be a little hard to get into the slots, my thumb was screaming at me after installing 31 of them. Aside from that, I definitely recommend these M-Lok covers.
Pros:
  • fit & feel
Cons:
  • a little hard to get in
Best Used for:
  • Mlok handguards
Would recommend: Yes
Was it helpful to you? Yes | No

They work fine

by Joe, Verified Owner from MD, United States Written on February 25, 2026
I do not like the voids in my hand guard . I install my optics and fill the voids with these rubber grommets for my personal preferences. In my opinion they look good , less snags or little branches/leaves / debris going in and breaking off . It’s just like the firearms ITS YOUR PREROGATIVE . Do what’s right for you !
Pros:
  • Looks good and price is right
Cons:
  • None
Best Used for:
  • Hunting or just for looks
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect fit and works great

by IronY, Verified Owner from FL, United States Written on September 16, 2025
These were a perfect fit and they worked great for my intended purpose
Pros:
  • Perfect Fit
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect fit, great product

by IronY, Verified Owner from FL, United States Written on September 9, 2025
I needed something to fill the gap behind an attachment in an Mlok slot.
These little plugs did exactly what I wanted them to do
Perfect!
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Work well.

by Justin, Verified Owner from AZ, United States Written on March 2, 2025
Silicone-type rubber gives a little extra grip and provides a heat barrier. They fit pretty snug, after a few hundred rounds I haven’t lost any yet.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Love these inserts

by Dissident Brass, Verified Owner from KY, United States Written on February 11, 2025
Rubber instead of plastic. Easy to get in and out. They give a much better feel than the plastic ones.
Would recommend: Yes
Was it helpful to you? Yes | No

Work great.

by m4a1sof, Verified Owner from FL, United States Written on December 24, 2024
I use these to fill unused m-lok slots and then wrap the handguard in Talon grip tape material.
Pros:
  • works
Cons:
  • None
Best Used for:
  • fill unused m-lok slots
Would recommend: Yes
Was it helpful to you? Yes | No

great fillers

by Nacho, Verified Owner from NY, United States Written on October 17, 2024
Not much to say. They feel great and add texture to forend. Easy install and fitment is very good. The walls of the mlok have to be thin or they wont fit that well. Definitely recommend.
Would recommend: Yes
Was it helpful to you? Yes | No

Ar 15 forearm grips

by Bob, from AL, United States Written on January 4, 2022
Love these instead of the plastic ones I bought before. Great feel soft rubber instead of hard plastic. Recommend these for anyone to have a great looking forearm and great feel. Easy to put on forearm I used a plastic knife so not to scratch the finish on the forearm.
Pros:
  • Great feeling rubber, looks great
Cons:
  • Not hard plastic not good looking
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect fit

by J, Verified Owner from MN, United States Written on June 24, 2020
I was a little apprehensive purchasing due to the poor image quality of the product. However, received and very impressed with fitment. I prefer it over stryke and magpul covers that I’ve tried. Very sleek.
Pros:
  • Price
  • sleek
  • fit & feel
Cons:
  • None for me
Best Used for:
  • Mlok hand guards
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.