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Questions & Answers
Will this fit the maverick 88 ? Expert Answer

No, it is not compatible.

by Ethan C., Gear Expert, November 7, 2019
Is this compatible to the Mossberg 590S shockwave? Expert Answer

The Shockwave uses a 5 13/16" length forend. Ergo makes a forend for the Shockwave that can be found using the following link:
https://www.opticsplanet.com/ergo-grips-m-lok-shockwave-mossberg-500-590-tri-rail.html

by Ethan, Gear Expert, April 22, 2022
Customer Reviews
Helpful Positive Review Mossberg 500/590 M-LOK Rail Forends Great and biggest size fits 18.5" Barrel by jg0026, Verified Owner, November 14, 2022
Good product. If anyone is looking around for the answer to whether or not this fits the mossberg 590 shockwave 18.5" barrel then know that the biggest model does comfortably. No one answered that question for me so I hope you find it here.
2/2 found this helpful
Helpful Positive Review Good product with minor nitpick by Bob, Verified Owner, May 5, 2020
First for people like me who were wondering what Mossberg shotguns this product fits. This is for Mossberg pump shotguns that have the 7 and 3/4 inches action tube. I installed it on a Mossberg 500. The product came in really dirty and dusty for som...
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6/6 found this helpful
Helpful Positive Review NOT for shockwave! by JT, Verified Owner, September 26, 2022
Does not fit the shockwave action. Great product. I tried to install this on the Shockwave and was upset when it didn’t fit. I hope I can save some grief and hassle for anyone else wanting to try. I mis-read the Details and should have taken measurem...
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1/1 found this helpful
Helpful Negative Review Does NOT fit Shockwave by Pft, February 6, 2022
It forced me to rate this, which, optics planet, that's stupid. I'm trying to leave a review, not a recommendation. It doesn't fit my gun, so I can't give it accurate stars, and I can't recommend or not if I can't use it. I have the Shockwave 590 20...
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1/3 found this helpful
Read All 4 Reviews
Color: Black Finish: Hard Black type III Anodized Fabric/Material: 6061-T6 Aluminum Gun Make: Mossberg Gun Model: Mossberg Model 500 , Mossberg Model 590 Handguard Length: 6.94 inGun Rail: M-LOK Included Accessories: 3 Black 4332 M-LOK Rail Covers Condition: Used Condition Quality: Good Condition Details: Inspect And Rebox Gun Type: Shotgun Mount Type: M-LOK Quantity: 1

Code: 3E-2RF-MLMF-4872-EDEMO-RE-C

MPN: 4872-EDEMO6

Product No Longer Available

Product Info for Ergo Grip Mossberg 500/590 M-LOK Rail Forends

This standard length Mossberg 500/590 replacement rail features M-LOK rails at 3, 6, and 9 positions. Machined from 6061-T6 aluminum, this is an extremely light-weight and low profile forend.image

ATTN: Mossberg uses two different length slide action bars on the Shockwave model. One measures 5 13/16" and the other measures 6 15/16". You need to confirm the length of you particular model prior to ordering. 

If yours measures 5 13/16" use part # 4256 and if it measures 6 15/16" use part # 4872.

Features of ERGO Grips Mossberg 500/590 M-LOK Rail Forend:

  • Mossberg 500/590; 6 15/16" length; M-LOK
  • Includes 3 black M-LOK rail covers

Package Contents:

  • Ergo Grip Mossberg 500/590 M-LOK Rail Forends
  • Includes 3 black M-LOK rail covers

Firearm Case

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Gun Parts and Accessories

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Mounts, Rings and Accessories

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Magazine and Accessories

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Gun Sights

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AR Handguard/Forend Screws

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Ergo Grip Mossberg 500/590 M-LOK Rail Forends Unavailable & Discontinued Models

List of Unorderable Models

USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO6, Used, Condition Good, Inspect and Rebox , MPN: 4872-EDEMO6 , Code: 3E-2RF-MLMF-4872-EDEMO-RE-C
USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO7, Used, Condition Like New, Inspect and Rebox , MPN: 4872-EDEMO7 , Code: 3E-2RF-MLMF-4872-EDEMO7
ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872 , MPN: 4872 , UPC: 874748006569 , Code: 3E-2RF-MLMF-4872
USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO5, Used, Condition Fair, Condition Fair, Used , MPN: 4872-EDEMO5 , Code: 3E-2RF-MLMF-4872-EDEMO-US-D
USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO1, Used, Condition Like New, Inspect and Rebox , MPN: 4872-EDEMO1 , Code: 3E-2RF-MLMF-4872-EDEMO-RE-A
USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO4, Used, Condition Fair, Scratches , MPN: 4872-EDEMO4 , Code: 3E-2RF-MLMF-4872-EDEMO-SC-D
USED ERGO Grip Mossberg 500/590 M-LOK Rail Forend, Black, 4872, EDEMO2, Used, Condition Fair, Installed/Mounted , MPN: 4872-EDEMO2 , Code: 3E-2RF-MLMF-4872-EDEMO-IN-D
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