KeyMod for the Mossberg 500

At the SHOT Show, Ergo Grips debuted a number of new KeyMod handguards and accessories. One of the things that received little attention was the KeyMod rail for the Mossberg 500 series of shotguns. This 6061-T6 aluminum forend has three rows of KeyMod attachment points: one each at 3, 6, and 9 o’clock.

Due to the nature of the design, KeyMod rails tend to be thinner and lighter than Picatinny rail systems. So this gives Mossberg owners a relatively lightweight option for attaching a white light or other tool to their home defense shotgun.

The suggested retail price is $117.25. The rail is made in the United States.

Richard Johnson

An advocate of gun proliferation zones, Richard is a long time shooter, former cop and internet entrepreneur. Among the many places he calls home is


  • jeff k

    too many systems on the market . i wish the community would adopt one and stick with it lol . i do like keymod but not as much as 1913 rails jmho

    • Phil Hsueh

      If I’m not mistaken, you can always add 1913/Pic rails to Keymod so you can attach non-Keymod accessories to your Keymod handrail.

      • Kjk

        Sounds like too many adapters

        • Pontificant

          It’s adapters all the way down…

  • Vitsaus

    So this forend will cost nearly half the price of the gun….

    • Nashvone

      About a quarter of the cost of the gun but it’s still way pricey for the limited space available on a tactical 500.

  • Adam aka eddie d.

    I like the stuff Ergo came out with this year, especially the cantilever rail and
    the Ultra Lite S handguard, but don’t know what they have in mind with their pricing.
    I’ve just done a quick search, the above mentioned ULS handguard usually sells for more than $150, which is overpriced for a simple carbine handguard IMO,
    even considering the factory Cerakote job.
    The only place I’ve found with a significantly cheaper price was Midway,
    they offer it for a $100 clearance price.
    That’s a good deal, and it’s about what the normal street price should be.
    This Mossberg handguard is also a bit pricey.

  • jcbauerca

    just give me an old fashion steel rifle that weighs a ton but kills everyone that it shoots at.

  • jcbauerca

    considering that our WWII and WWI fathers were not as strong as we are now. but they still prevailed.

  • Brandr

    Back when I bought my model 500 I paid 175 bucks for it new. Makes it real difficult to want to spend 117 fore a different foreend.