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FAB Defense M-LOK Compatible Handguard for Mossberg 500/590
As Low As $26.99 Save Up to 34%
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Most Helpful Positive Review Perfect Fit.
Perfect fit and functionality for my Mossberg 500A
Most Helpful Negative Review Mossberg 590s Shockwave.
Buyer beware this forearm will not fit the Mossberg 590s shockwave without some additional modifications or an extended magazine cap! You will have to cut about two inches of the FAB forearm and shave down the grooves inside the forearm about an inch to get your Swivel nut on. It was truly a pain an...
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exactly as described

by Jesus loves you, Verified Owner from SC, United States Written on August 5, 2025
The product came in exactly as described, it is just the forend no other parts or pieces included.
Would recommend: Yes
Was it helpful to you? Yes | No

mav88 with heat shield

by Mikey, Verified Owner from CO, United States Written on June 7, 2025
I got this to replace the awful OEM forend and I couldn't be happier with the fitment. To put it on a mav88 you need a 500 slide tube assembly and nut. It goes on without any interference with the heat shield. Low profile. My only complaint is that it's not super grippy. But that can be fixed with some grip tape.
Would recommend: Yes
Was it helpful to you? Yes | No

Nice swap for the factory "corn cob" forearm

by Chris, Verified Owner from HI, United States Written on May 19, 2025
This forearm looks nice and works well. It seats as securely as the factory synthetic forearm. The MLok slots are a nice addition that allows you to add accessories on three sides. During the installation, I did have to do some minor Dremel work to get the retension ring to engage the threads to lock it into place. Beyond that, the installation was simple and straightforward.
Pros:
  • M lok
  • Looks great & feels great
Cons:
  • minor dremel work needed
Best Used for:
  • home defense sport and hunting
Would recommend: Yes
Was it helpful to you? Yes | No

Great Forearm perfect fit can leave heat shield on gun fast install

by DENNIS, Verified Owner from NY, United States Written on April 11, 2025
Not sure what these reviews mean it was hard to install I did not have that problem it is a nice snug fit on a mossberg 590 took all of 45 min to install the hardest part was removing the forearm nut great forearm I installed a streamlight pressure switch on the m-lok using 1913 Picatinny rail perfect fit DO NOT HAVE TO REMOVE MOSSBERG HEAT SHIELD
Pros:
  • Easy install plenty of accessories mounting space
Cons:
  • None especially at price point
Best Used for:
  • tatical home defense
Would recommend: Yes
Was it helpful to you? Yes | No

It's just ok...

by Tangerineman, Verified Owner from AZ, United States Written on January 22, 2025
It was far more difficult to get on than i thought it would be. I had to use a soft mallet to hammer it on. You have to make sure it's hammered ALL THE WAY down because you won't be able to screw on the forend end cap due to a lip inside the forend that will block the end cap from threading. Once installed, there was a lot of "play" in the forend that allowed it to rock side to side. Also, I strongly recommend attaching any MLOK attachments to the firend before installing on the shotgun because you really can't see underneath the forend to see the orientation of the MLOK screws. Overall, it does the job but it's just meh. However, a positive is that it did fit my 500 with a heat shield with no modification required.
Pros:
  • Fits with heat shield
Cons:
  • Hard to install, finicky, and lots of play.
Best Used for:
  • Home defense. Probably not hunting or excessive use.
Would recommend: Yes
Was it helpful to you? Yes | No

I wont fit on Mossberg 500

by Rodrigo Salon, Verified Owner from CA, United States Written on January 7, 2025
When I put this thing on my Mossberg 500 pump shotgun, It will slide in a little tight, I finally get it in but the big problem now is the forend tube nut wont go in because the front of this FAB Defense is too tight and the nut wont go in. I regret buying it.
Pros:
  • None
Cons:
  • Tube nut wont go in
Would recommend: No
Was it helpful to you? Yes | No

DOES NOT fit the short action tube Mossberg 500

by Critter, Verified Owner from CO, United States Written on January 6, 2025
Really like the look and feel of this product seems very well made. I thought I would be able to make this work with the shiort action tube with the hogue adaptor, but that is not the case. It is not a matter of length but diameter. Thought I could modify with a dremel but there are ridges that run the full length inside of the forend so it would be a bit of a pain and tight fit to dremel it to fit. Kept seeing conflicting reviews about whether it will or won’t fit so hope this review helps others not make the same mistake as myself. If I had the long action tube I wouldn’t hesitate to purchase this.
Would recommend: Yes
Was it helpful to you? Yes | No

Needs Better Stippling, But Made It Work

by Sebastian, Verified Owner from CA, United States Written on December 24, 2024
Installed this in my 590 Shockwave (18.5" heavy walled barrel).Wanted a forend with a more aggressive texture than the Magpul forend. Unfortunately, the stippling is shallower than I had hoped. Its just good enough with dry hands, but somewhat slippery with sweaty hands. However, this FAB forend does allow you to mount Magpul Type 2 rail covers along the top M-Lok slots (not possible on Magpul forend). Adding the rail covers gave this forend a much better grip. The install required a good deal of elbow grease. It fits SNUG, as did the rail covers. It's not coming off easily. I'm satisfied with the overall quality and prefer this shape to the Magpul forend (I have large hands). Will run this combination moving forward.
Pros:
  • Well-made, Fits Snug, Low Height
Cons:
  • Stippling not aggressive enough
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

looks good works good

by Kenneth Wilson, Verified Owner from IN, United States Written on November 17, 2024
Good forend the mlok are in the right spots for lights not too big to grip doesn't slip out of your hand nor scratch up your hand
Would recommend: Yes
Was it helpful to you? Yes | No

Well made and easy to install

by New builder, from ID, United States Written on September 28, 2024
This is well make and easy to install. I like the look update from the stock forend as well.
Pros:
  • good grip
  • Updated look
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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