Suppressing The Kel-Tec CMR-30

CMR 2

Silencer Shop sent me a Surefire Socom 2 RC2 5.56 suppressor and a Bowers USS 22 suppressor to test on my CMR-30. I wanted to see how well they could suppress a common .22 magnum round and how those silencers compared to my SilencerCo SpectreII.

Silencer Shop recommended the Bowers USS 22. I asked for a 5.56 can to see if the larger size and volume might help with the gas expansion and possibly make the .22 magnum quieter. I was thinking of how well the OSS suppressors seemed to work with larger volume so maybe that might apply to this application.

I used CCI Maxi-Mag 45gr. The box says they shoot 1875 fps.

Using the Magnetospeed V3 Ballistic Chronograph I was able to get velocities on 10 rounds per silencer.

First up was the Surefire Socom2 RC2 silencer.
01, 1815, ft/s
02, 1839, ft/s
03, 1796, ft/s
04, 1777, ft/s
05, 1801, ft/s
06, 1711, ft/s
07, 1774, ft/s
08, 1777, ft/s
09, 1831, ft/s
10, 1816, ft/s

Min,1711 . Max,1839  Avg,1793 ft/s

Next up was my SpectreII silencer.

01, 1752, ft/s
02, 1780, ft/s
03, 1823, ft/s
04, 1790, ft/s
05, 1797, ft/s
06, 1839, ft/s
07, 1793, ft/s
08, 1802, ft/s
09, 1803, ft/s
10, 1795, ft/s

Min,1752, Max,1839  Avg,1797 ft/s

Finally the Bowers USS 22.

01, 1834, ft/s
02, 1757, ft/s
03, 1846, ft/s
04, 1848, ft/s
05, 1736, ft/s
06, 1873, ft/s
07, 1790, ft/s
08, 1843, ft/s
09, 1779, ft/s
10, 1832, ft/s

Min,1736, Max,1873 Avg,1813 ft/s

Based on these numbers the Bowers silencer actually has higher velocities for the .22wmr Maxi Mags over the Surefire and SilencerCo.

I like the Surefire can just for the QD attachment and that I can use it on my AR-15. Neither silencer seemed to out perform the other in terms of noise suppression. They were all pretty much equal. Any differences are too subtle to really concern ourselves.

Now price is a definite concern. The SilencerCo SpectreII is by far the cheapest out of the three. MSRP is $431. The Bowers USS 22 MSRP is $495. And of course the SureFire is the most expensive at an MSRP of $1095.

 

One issue I did not mention is the benefit to having a small light weight rimfire can vs the larger and heavier centerfire can. It is great to use on rimfire pistols. You could mount the Surefire Socom 2 to a pistol but the weight would make it unbalanced.

@surefirelights #surefire556supressor on my PPK 22. @silencershop

A photo posted by Nick Chen (@solscud007) on

Also the size of the Socom2 does not allow it to fit under small handguards like the ones I have on my Umarex HK416 pistol and Smith & Wesson M&P 15-22.

I would like to try an OSS over the barrel suppressor on my CMR-30. I was impressed with what they can do to 5.56 SBRs and .338 Lapua. Maybe the larger volume and flow through design would help with the noise and reduce gas to the face.



Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at nicholas.c@staff.thefirearmblog.com


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  • How about we just get some CMR-30’s on the market first?
    That thing is a freaking Unicorn… You can’t find them and dealers all “Have them on Order” but are never actually getting them.

    • allannon

      This. I don’t know if I really want a CMR-30, because I have yet to see one in person, much less get my hands on one.

    • Nicholas C

      They are out there. I am testament to that. I found this randomly while visiting Grice’s Gun Shop for the first time. I asked if they happened to have one and they did.so I bought it on the spot. I have been wanting one since I saw it at Shot Show back when it was called the RMR-30.

      • How do you like yours? Especially interested in the reliability.

        • Nicholas C

          The gun is fine. It is the magazines you need to be on top of. They sometimes jam if you don’t load them properly. As seen in my video. If you notice, they stop jamming once I tap the mag against the table.

          • Once loaded properly, do they stay loaded properly, for example, if you pulled one out of a mag pouch after walking around?

          • Nicholas C

            I guess. I dont really leave these loaded for long. It is mostly a range toy for me.

    • Kelly Jackson

      I think that’s true of all Kel Tec long guns, I finally saw my first bullpup in the wild this past November

  • Dracon1201

    Everyone’s like, “look at my sweet CMR!” And I’m like, “Saw a RFB for the first time yesterday (2016).” 🙂

    • Kyle

      Ha, I still haven’t seen one of those at a gun store. I have seen one at the big national gun show that came through town last month.

      • Jwedel1231

        My uncle had one (held it in person, real thing) 2 or 3 years ago.

    • JumpIf NotZero

      Ha, just saw my first one the other day too. Shot one a few years back, decided I had no interest, didn’t realize I hadn’t seen one since.

    • Budogunner

      I really want an RFB… but only if they are reliable and have easy to obtain spare parts. I hear they’ve been working on reliability issues, but they are still to rare for me to sell off a couple of trusted firearms to purchase an RFB.

  • thedonn007

    Is .22 mag just as dirty as .22 lr? Will you need to take apart the can for cleaning? If so, you would not want to use a can that cannot be taken apart for cleaning.

    • JumpIf NotZero

      Yes, 22mag is as dirty if not more so.

  • DIR911911 .

    that thing could take out zombies for days 🙂

  • Budogunner

    I’m pretty confused that an article exists here comparing silencers by measuring bullet velocity rather than decibel levels…

    • JumpIf NotZero

      Cans sometimes offer an increase called a freebore boost. The can acts like a really poor barrel extension giving the gas a little more time to push the bullet, but it’s pretty minor.

      In this case, the author makes the implication that this boost is better, but I see the exact opposite. But I like my can to have bigger bores so I’m not always worried about baffel strikes.

      • Nicholas C

        I did not think the boost was better. Just an interesting characteristic out of those 10 rounds.

        • JumpIf NotZero

          My apologies, I read it as implied “better”.

          I will give it to Bowers for how long they’ve been in business! But that’s about all… Their latest stuff says 2010 to me.

      • Budogunner

        I am familiar with free-bore boost. One of my cans adds it noticeably. I’d never factor that into my suppressor selection process, though.

        I guess I just had a “wha….?” reaction as the emphasis on velocities is like a video on selecting a new smartphone purely based on the “unboxing” experience. The factor chosen is no indicator of performance, this is a lot of trouble to go through without producing substance.

        Nicholas is one of my favorite authors here, hence my confusion. I’m glad he got to have this experience but I’m not sure what I’m supposed to take away from this.

        • Nicholas C

          Thanks. To address your dilemma, it is just different. I don’t see many people compare velocities with suppressors. I have the chronograph. It is small and portable. So why not use it? I did not mean to emphasize the velocity aspect of the test. It is just another data point.

          I will probably continue to measure velocity since I can. But I will also check Zero shift on the suppressors as well.

    • Nicholas C

      Measuring decibels is not easy. To do it right it would require a $10K unit. Apps that measure it cannot measure suppressed DBs that well. So most of the time it is personal preference.

      • Budogunner

        There are folks out there with the gear who publish the results of their independent tests. Maybe you could take your CMR-30 on a road trip to do treating with one of them someone.

        For that matter, SiCo has the gear and isn’t shy about testing competitors’ products along with their own. I bet they would love the free press that came with helping you do the test.

        • Nicholas C

          That sounds great but they are far away. Not worth it for one characteristic of silencers.

          • Budogunner

            Ah, no worries. I didn’t know the relative locations.

          • JumpIf NotZero

            Not worth it for one characteristic of silencers.

            and for rifle silencer’s and applications with supersonic ammo one of the least important.

  • JumpIf NotZero

    That bowers can is without question more likely to have a baffel strike on. They’re still on that last generation of silencer design where they’re tightening the bore to get better numbers which is why you are seeing a higher freebore booster.

    I’d personally find that very suspect, not a feature.

  • Cymond

    “SpectreII”
    Did anyone what read that as one word? Is supposed to be two words, read and pronounced as “Spectre 2”.