The Ultimate e-Rat-ication Tool?

Smith & Wesson M&P 22 Compact

I live in an area that marketing-savvy realtors would call “scenic wetlands and natural marsh habitat.” Most other people call the gooey area behind my house a swamp.

I love it because of the quiet, the natural sounds that don’t even require an electronic sound machine, and variety of wildlife I can watch from my back porch. The only drawback is that some of the more entitled critters seem to think that it’s their natural right to move into my garage and gnaw holes in the ceiling so they can move in and procreate while eating fiberglass insulation. Not my idea of a fun date, but they are at the bottom of the food chain for a reason.

Over the years, I’ve experimented with a variety of ways to deal with these beast-lets including traps, poison, and air guns. More recently, I’ve stumbled on the ultimate e-rat-ication tool. A Smith & Wesson M&P 22 Compact outfitted with a SilencerCo Sparrow suppressor. That’s pretty good on its own, but what really makes this combo shine is the choice of ammo.

For some applications, even the .22 rimfire is too much bang. The Super Colibri (right) fires using only primer compound - no powder. M&P.

For some applications, even the .22 rimfire is too much bang. The Super Colibri (right) fires using only primer compound – no powder.

Living in a populated area, the neighbors tend to frown upon the use of .22LR even though it’s pretty darn quiet when suppressed. With 40-grain weight and 1,000 fps (give or take) velocity, those projectiles can still sail through things and break the property boundaries if one isn’t careful.

M&P? It is all about the ammo.

Here’s the solution to that problem: Aguila Super Colibri. These little gems look like regular .22s with a few exceptions. The bullet is smaller and pointed, weighing just 20-grains. Inside, there is no powder, just the rimfire primer compound, and the overall length is far less than a standard .22LR cartridge. The result is that they fire from my M&P 22 Compact pistol somewhere in the 300 feet per second range. The light bullet combined with no powder bang and low velocity means two things. Uber quiet and low penetration on everything except rodent hides.

While short, the Super Colibris do work in the standard magazine. You have to manually cycle as there's not enough pressure to run the action. M&P.

While short, the Super Colibris do work in the standard magazine. You have to manually cycle as there’s not enough pressure to run the action.

Due to their unusual shape, the Super Colibris feed a bit oddly into the magazines of the M&P 22 Compact. They work, but load with care as you’ll want to place them in a reasonable position with the primer towards the back. Because they’re shorter, they can move around a bit otherwise. The other “cost” is that they won’t cycle the semi-automatic action. That’s OK. If I wanted, I could always use a Ruger Single Six revolver, but the main goal here was silence, so I’ll happily make the trade-off of manually cycling the side. Besides, using a pistol allows attachments of lights and lasers, both of which amplify the e-rat-ification capabilities of those nocturnal pests.

Tom McHale is a committed learning junkie always seeking a new subject victim. As a lifelong student of whatever grabs his attention on any particular day, he thrives on beating rabbit trails into submission. In between his time as a high-tech marketing executive, restaurant owner, and hamster cosmetology practitioner, he’s published seven books and nearly 1,500 articles about guns, shooting, and the American way.

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  • Bishop Alexander

    I have been playing around with a P-22 and now a GSG Firefly and a Tac-65 with the Super Colibris.
    I love how you say Uber quiet. HA that’s an understatement!!! Allo you hear is CLICK! then THWAP! When it hits the soft flesh.
    I have always been weary about using the Colibris due to stabilization of the bullet.
    Short barrel and no powder..
    I have read on different forums over the years not to use the Aguila SSS (Sniper SubSonic) in pistols due to much longer bullet and shorter barrel Again it’s a stabilization issue.
    I guess if you had a bullet strike, the slower moving bullet wouldn’t do too much damage.
    BUT you do what you want and I’ll do what I want. HEY the Super Colibris say on the box not to shoot them in a rifle and I have shot over 1K through either my 10/22 or my M6 Scout without a single problem.

    • BraveNewWhirled

      Yup. They work fine in my 10/22. Just gotta cycle it.

    • BonesJones Gunny

      Bullet Stabilization with Aguila SSS LOL
      It’s a very heavy (for 22LR) 60 grains, and subsonic to boot, so at shorter ranges a little (or a LOT!) of Yaw actually enhances the damage potential of the heavy, slow-moving projectiles. I really see no downsides here. Great Post 😎

      • Bishop Alexander

        I was specifically talking about shooting them in a suppressor. After re-reading my comment I realize that I didn’t make that clear enough.
        The bullets alone are perfect for tree rats and your article is spot-on and opens the eyes to shooters that may have never known the wonderful existance of these bullets.

        • Robt Greener

          Bullet/Baffle Strikes ahhh! Now it makes perfect sense.

          I have a Ruger Mk4 that would love one of these setups 😀

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  • Archangel

    Suppressed Keltec CP33 works for me 🙂