The “Mjolnir” AR-15 grip from Venom Defense

According to Norse mythology, Mjolnir is the hammer of Thor, the God of Thunder.

Mjolnir is one of the most fearsome weapons, capable of leveling mountains to dust.

The market is full of pistol grips for AR-15 pistols and rifles, and here’s Venom Defense’s take on the subject.

This is Venom Defense’s description of the billet grip:

Our NEW MJOLNIR “skeletonized” AR-15 / AR-10 pistol grips are CNC machined on our high-tech equipment in our facility in Allendale, Michigan. They fit any receiver that accepts a standard AR grip. We painstakingly craft these from solid billets of high-quality aluminum. The unique geometry provides for an ergonomic grip with a unique look unparalleled by anyone else in the industry. Our aluminum grips weighs just under 6oz. Has a beautiful machined texture that simulates the effect of stippling on polymer components.


The Mjolnir hammer was unique and made by the dwarf brothers Sindri and Brokkr. Not sure how these are made, but most likely by a CNC machine. The price is an affordable 59 USD, and it’s available in a bunch of different colors.


A low profile mounting screw and a special installation tool is included to allow installation.


The grip fits most forged and billet machined AR15s, as well as AR10/AR308 or any receiver that accepts a standard AR15 grip.

Below: A beautiful build with the Mjolnir grip. Picture by Freedom7Media.


Below: There’s also a carbon fiber version, the “Stealth version”. This would be my personal choice, and suits this build perfectly. Will set you back 149 USD. No one ever chose carbon fiber to save money.


Carbon fiber again on a SIG MPX.



The installation process can be found on YouTube.

You can find Venom Defense’s homepage here.

Eric B

Ex-Arctic Ranger. Competitive practical shooter and hunter with an European focus. Always ready to increase my collection of modern semi-automatic firearms, optics and sound suppressors. Owning the night would be nice too.


  • JustAHologram

    I question the advantage of a metal pistol grip but they do look nice

    • Patrick

      In freezing cold weather, I’d rather be gripping plastic….

      • MrBrassporkchop

        After sitting in a hot car I’d rather be gripping plastic.

      • Venom Defense

        Food for thought – what are most fore ends / quad rails made from? what about your lower? Where does your finger rest when its not on you (metal) trigger? Wouldn’t the aluminum receiver be the same temperature as an aluminum grip?

        • PersonCommenting

          Does aluminum really retain heat or cold? I mean im just use to tin foil but unless something is producing the heat or cold and is touching the aluminium then it wont keep that temperature.

          • Paul Epstein

            It’s not about retaining heat, in fact it’s the opposite- you don’t want the material of the grip to conduct heat into, or out of, your hand. Your hand is by default at a fairly safe and usually comfortable temperature. The aluminum and plastic grips are probably going to reach the same temperature eventually- but once they are that temperature, the aluminum is going to transfer that heat more readily between itself and your hand.

        • Zachary marrs

          What are most rail covers made out of? Certainly not aluminum

          There is a difference between the tip of a finger, and the entire hand

    • BattleshipGrey

      It gives you that extra boost of confidence when operating in a lightning storm.

      • Venom Defense

        Just don’t hold it straight up in the air.

  • Joe Gamer

    I have this grip, it feels pretty good but there’s a weird hump by the trigger guard and they need to drill a hole straight through so you can actually attach it properly, the rounded hex wrench they send you is worthless for actually getting it tightened down. If they sorted these flaws out I would 100% recommend it but as of now I say give it a pass for a serious use rifle. I’m using it on my target lower that’s bench-rested most of the time. Running and gunning with it would drive me nuts as that little hump digs into the top of my middle finger(medium hands)

    • JustAHologram

      Granted you shouldn’t need to do this but have you considered dremeling a bit of the bump out to make it more comfortable.

      • Joe Gamer

        I thought about it, I still might at some point but it has that nice cross hatching that would get messed up and the aluminum is pretty thin right there.

        • JustAHologram

          Well you can redo the cross hatching with I finer dremel tip but that is fairly thin metal there

    • Venom Defense

      Joe – Thanks for the feedback. We are currently working on releasing a new model that has a more “generic” shape. We have gotten great feedback on both the ergonomics and aesthetics, but also understand that it does not fit perfectly for everyone. As to the allen wrench – the wrench works just fine for getting the bolt plenty tight – however, loctite or some sort of thread locker is required to keep the screw from vibrating loose. You can also use a lock washer as with a standard A2 grip, but it will be visible from the side.

      • Joe Gamer

        It’s always great to see a company looking for feedback from the community! Honestly when I picked it up before mounting it I thought it was great, fits well in my hand, looks great, I bought it to match the titanium and stainless accents on this rifle and it does that very well. I’d say that if you opened up the CAD drawing and just shifted the finger grooves up a millimeter or stretched it a millimeter(which would accommodate larger hands) or just increased the radius of the top finger groove slightly then it would mate to the trigger guard at a more natural angle. I’m guessing at the manufacturing process so this is way oversimplifying what I’m sure is a much more complex process.
        As for the tool I’m just not gonna get on board with that, with a 250 dollar lower I worry about stripping it, and I also don’t like the idea of needing a specialized tool to remove/install the pistol grip. On some rifles this might be a one time only procedure but I had a titanium screw I wanted to use and I also love to tinker endlessly with all of my rifles. I’ve also lost the wrench so hopefully it turns up at some point. That’s obviously not your fault but if it installed with a standard hex/star wrench I would still be good to go. It could be done with a vice a jig and a drill press. Maybe as an optional upgrade for additional cost because I do understand that this adds time and man-hours to each unit and isn’t an issue for everyone. I look forward to seeing what new stuff you guys come up with!

        • Venom Defense

          Joe – email me you address and I will send you a replacement wrench.

          • Joe Gamer

            I found it but thanks! I was able to tighten it up a bit more as well.

  • User

    What a bullshit product for such a name. Lower weight but higher strenght can be easly achieved with good STATIC shapes. While this just weakens it. But i quess its rather for the looks.

    • PersonCommenting

      I mean they arent the first to do this. Lots of skeletonized grips out there. They look cool.

  • gusto

    cultural appropriation!

    we have to put up with lame ass movies where Thor himself is reduced to a sidekick, and now this?

    This wouldn’t be caught dead with anything less than a 50 bmg

  • Hoplopfheil


  • Garmanarnar

    Those are ugly and look really uncomfortable to hold.

  • valorius


  • valorius

    Is it too much to ask that someone make a matching tommy gun style pistol and foregrip for AR15s?

    • DIR911911 .


  • pithy

    The market is ALSO full of inane references to Norse mythology, coming from people who can’t even be bothered to read the Edda.
    I will say that Amon Amarth lyrics should be categorized as reading the Edda.

  • Anomanom

    Trivial question, but on a DI rifle, wouldn’t an aluminum grip get unpleasantly warm as the receiver heats up?

    • PersonCommenting

      I wouldnt think so, I mean most of the heat stays forward of the bolt.

    • Zachary marrs

      The reciever on a standard AR gets no more hot than an op rod AR

  • Venom Defense

    Erik – Thanks for the great write up!

  • USMC03Vet

    I put that on my AR15 the other day and was pulled over by the police for exceeding the high speed low drag limit. Operator beware. This one simple trick will make you tier one and Navy SEALS hate it.

  • claymore

    Too many youngsters on this site LOL. Those grips look exactly like houge or other “aftermarket” grips for K series S&W revolvers.

  • Matt Grimes

    I could see gear or a finger getting caught in that somehow under stress. No thanks.