[GAOS] Inland PM-22 Rimfire Suppressor

At this recent Great American Outdoor Show, Inland Mfg had their PM-22 suppressor. Something we missed at Shot Show 2017.

The PM-22 is a polymer monocore rimfire suppressor.

Since it is polymer, it is extremely light weight. The entire suppressor only weighs 3.3 oz!!

The suppressor is just 5.5″ long and less than 1″ in diameter. The polymer core is threaded for 1/2×28 TPI although their flyer has a typo.

The PM-22 will retail for only $189.95 and that is MSRP so conceivably one may be able to purchase for even less.


Along with their light weight rimfire suppressor, Inland MFG is going to be selling dBFoam, a spray foam for suppressors. Somewhat like packing grease in a suppressor, you squirt it into the suppressor and shoot it “wet”

The foam acts as a lubricant as well as a sound reducer. It displaces water and can be stored and the foam consistency stays consistent for up to 6 months of storage. According to the flyer, independant testing saw an average of 3-5 db reduction with 10 shot strings. Utilizing MIL-STD-1474-E sound level testing procedures. They also saw a significant sound reduction on the first shot fired that exceeded 10 db reduction.

The can of dBFoam will retail for $29.95 in a 16 Oz can or $19.95 in a 4 Oz can.

Along with their suppressor and foam, they had their line of M1 Carbines and M37 replica shotgun.


I was curious about the M37 Trench gun which is made by Ithaca exclusively for Inland Mfg. Michael G. wrote a review on this gun which you can read here. One thing that was not mentioned in Michael’s review, and something I immediately asked Inland Mfg about was: “Can it slam fire?”. The answer is of course no. However Inland Mfg told me that, if you have their M37 Trench gun, you can contact Ithaca and they supposedly have a disconnect that you can buy and install to make your M37 Trench Gun replica more historically accurate.

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


  • uncle fester

    How much will it cost to replace the baffle stack when it breaks?

    • M.M.D.C.

      I’m guessing that’s the genius of the thing – the baffles are the weak point but they’re cheap to replace.

      • LGonDISQUS

        If more than $40 (20, if i was saober), they are smoking crack.

  • If you need artificial medium for your 22Lr suppressor then you have a real design issues.

    • Glenn Bellamy

      The suppressor is very effective dry. The foam eliminates first round pop (if that bothers you) and makes any suppressor design 3-5 dB more effective and cooler.

  • M.M.D.C.

    I like the shotgun. I wonder how easy it is to get rid of the barrel shroud.

    • DrewN

      Do you like it $1200 worth?

    • AndyHasky

      Ithaca still makes them.

  • Some Rabbit

    I notice no numbers to support a claim of sound reduction. The ATF may call that a suppressor but I don’t. All it does is reduce gas expansion space while offering scant gas trapping (doubly self defeating). The fact they must offer a spray goo to “enhance” the effectiveness tells me it’s bogus. Gimmicks are no replacement for a stack of spaced baffles (Maxim’s iconic design).

    • Glenn Bellamy

      The 3-5 dB reduction is additional effect of the foam, not the total of what the suppressor does.

  • TheUnspoken

    This supressor design seems to assume the passage of the HPA or some form of silencer deregulation. Right now the majority of suppressors are bullet proof, full auto or belt fed rated, used by SOCOM, built like a tank, keep for your whole life and pass on to your grandchildren designs.

    Since you can’t even have spare baffle sets or parts, cheap, disposal suppressors just aren’t a thing.

    But in a different regulatory environment, cans like this could make sense, especially for low cost, ultra light options. It could come with a 6 pack of disposable cores. 3d printed designs, why not? No need to clean it either. Build some wipes in on some models.

  • Kodi

    $30.00 a can for aerosol grease reminded me of Victor Kiams strategy with razors. Make the razor cheap and the blades where the real money is. I suspect the spray in grease not only makes the suppressor quieter but also prevents the core from early failure due to heat and carbon build up. Keep it quiet, cool and easier to clean. Makes sense actually if that’s the case.