Tested: Recoil pad for the ACE ARFX skeleton stock

We introduced Jyrki from Finland and his CNC machined throwlevers in a recent TFB post.

While examining his webpage I noticed he was also selling a pad for the ACE ARFX AR15 stock, a stock I use on a few of my rifles.

As much as I like the ACE ARFX skeleton stock I always modify them. The rubber recoil pad which goes to your shoulder is very sticky. Now this may be an advantage in some cases, but for practical, dynamic shooting the rubber pad always gets stuck on my clothing, slowing down the draw among other things.

My mod is not invented by me by any means, many use it, and it is very simple. I take normal silver tape and cover the rubber. It doesn’t looks very good, but it works. And my competition rifles are mainly for helping me do my best to win, not win a beauty contest.

Below: Looks are secondary, function over form. But Jyrki’s pad offers both.


Over to the solution with a pad made out of a hard material. From throwlever’s homepage:

Recoil pad for the ACE ARFX skeleton stock for the AR-15 – 20.00 €  — Milled from black HDPE. This is slightly thicker than the original 0.5″ pad. Excellent for competition use, as plastic pad does not stick to your clothing like the OEM rubber pad does. Does not come with screws. Mount with the screws that came with your stock. I have posted this pad design on Thingiverse, so if you own a 3D printer, you may print your own pad for free. ABS or PETG should work fine.

This means that the design is free, so you can download the CAD file and make it yourself in case you think €20 is too much.

Note the there is a difference between CNC machining (removing material) and 3D printing (additive manufacturing by layer on layer). In this case I would prefer CNC machining.

Jyrki’s pad, which he sent me for free for testing purposes, came with a note:

The pad is literally the second thing I have ever drawn with a CAD program. I knew nothing about CAD or CAM, don’t have any education for this. The pad was just a learning process in itself. I hope you like it.

I hope that can encourage other people to do a bit of their own R&D, if they have an idea they think can fly.

Below: The recoil pad with a Böker Kwaiken in Carbon Fiber, a very nice flipper knife I sourced from Wanderoo. Notice the very flat back side of the pad.

The recoil pad installation was very easy. Getting rid of the old, sticky silver tape was the most difficult thing.

I have since used it on my competition rifle on several competitions (incl. the Lvl 3 Nordic Championship) with very good results. Actually I didn’t even think about the new pad, which I consider a good thing. I didn’t have to create a new habit.

If you have an ACE ARFX stock you should buy one or build one yourself, unless you really like the sticky rubber on your shoulder. If you don’t shoot your rifle in competitions then it might not be for you.

Throwlevers.com can be found here: http://throwlevers.com/

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.


  • William Johnson

    So it is a hard plastic rather than a soft pad.

    • Jyrki Partanen

      That is correct. A .223 with a muzzle brake has practically zero recoil, so the pad does not have to be soft. You can also use the ACE stock without a pad, but if you need a little more LOP, you can use a pad to get that.

  • James

    Why would I want to run an Ace skeleton stock and not a MFT Battlelink minimalist stock? I don’t get this one.

    The Skeleton stock requires A2 extension tube, weighs 10oz and is not adjustable. MFT’s stock uses a carbine tube, has a great cheek weld, is adjustable in length and weighs 4oz less.

    • raz-0

      It’s really strong and fixed? Also very rigid. It’s a pretty good stock for building a balanced gun that isn’t too heavy. In my experience, taking the weight out of the front of the gun and using a stock like the ARFX yields a nicely balanced gun with a nice swing to it. It’s also not forming a hook, so it doesn’t get hung up on stuff.

      3.5oz for the tube + 9.2oz for the stock +~1oz for the butt pad if you use it+5.0 for the buffer. = 18.7
      The other most typical setup I have seen is no butt bad, which is 17.7oz.

      4.2oz for the tube and castle nut +4.8oz for the minimalist stock+4.7oz if you use an H2 buffer. = 13.7

      I picked an H2 because I know a lot of folks wind up running them in their setups when building out a collapsible setup.

      Putting 5oz in the tail end when you have 1.5lbn of cantilevered optic on the gun can feel more balanced and handle nicer than going all out light on the stock.

      • Timmah_timmah

        You sir are too logical with your science talk and whatnot

  • Timmah_timmah

    That’s a sexy blade right there

  • Person

    I wish I had an ACE stock so I had a reason to download the .stl file and print the recoil pad. I’m excited to see more firearms items on Thingiverse.