The Complete Guide to Rimfire Suppressors

Everything you need to know about rimfire suppression, ammunition selection, host firearms, and the best cans for your setup.

Why Rimfire Suppression Is Great

If you've ever wanted to get into the world of suppressed shooting but weren't sure where to start, rimfire is the answer. It's affordable, it's approachable, and the results are impressive. Whether you're a seasoned shooter looking to add something new to the range bag or a first-timer curious about what all the fuss is about, a suppressed .22 might just be the most fun you can have with a firearm. Here's everything you need to know.

There's a reason rimfire suppressors are one of the most popular categories in the NFA market, and it's not complicated. They work exceptionally well, and they don't cost a fortune to get into.

When you suppress a .22 LR with the right ammunition, you're talking about hearing-safe performance without muffs or plugs. The crack of a standard rimfire round drops down to something that sounds more like a pellet gun than a firearm. At an indoor range, people in the next lane might not even notice. Out in the field, it's a different shooting experience entirely.

Beyond the sound reduction, the price point makes rimfire cans incredibly accessible. Many quality rimfire suppressors come in well under $500, and when you factor in that the same can works across a wide range of rimfire firearms, you're getting a lot of value out of a single NFA item. One can for your pistols and rifles alike.

There's also something to be said for how rimfire suppression introduces new shooters to the hobby. The combination of low noise, low recoil, and low cost creates an environment where someone who has never fired a gun can focus entirely on fundamentals without flinching after every shot. For range days with younger shooters or anyone who's ever been put off by the noise and concussion of centerfire cartridges, a suppressed .22 is a revelation.

Simply put, rimfire suppression is quiet, affordable, and just plain fun.

Subsonic vs. Supersonic: Does Your Ammo Matter?

Yes, it absolutely matters, and understanding why will let you have the best experience at the range.

Sound suppression works by containing and slowly releasing the expanding gas that exits the muzzle behind the bullet. What a suppressor cannot do is silence the supersonic crack of a bullet breaking the sound barrier. That crack is a small sonic boom, and no can in the world will eliminate it. This is why ammunition selection is so important with rimfire suppressors.

The good news is that .22 LR is naturally well-suited to suppressed use. Most commercial .22 LR ammunition is loaded to subsonic velocities out of a pistol-length barrel, typically staying below 1,100 feet per second. From a rifle-length barrel, quite a bit of what the industry calls "standard velocity" ammo also remains subsonic. Loads like CCI Standard Velocity and Eley Target are popular choices among suppressed rimfire shooters for exactly this reason.

Things get louder when you step up to "high velocity" loads. Rounds like CCI Mini-Mag, Federal AutoMatch, or Remington Golden Bullet are loaded to push past the sound barrier, especially out of a rifle barrel. They may cycle some picky semi-autos more reliably, but they bring that characteristic supersonic crack with them. Through a suppressor, you'll hear the muffled muzzle blast and then a sharp crack downrange. It's not unpleasant at all, but it's noticeably louder than a true subsonic load.

For the best suppressed performance, stick with subsonic ammunition. If you run a semi-automatic host, CCI's Subsonic line is a reliable choice that tends to cycle without issue. CCI Quiets (rated at 710 fps) may require manual cycling but deliver some of the most impressive sound reduction you'll find.

Pistols vs. Rifles: Which Suppresses Better?

If you want the quietest possible experience, choose a rifle. It's not particularly close.

A longer barrel gives the powder charge more time to fully burn before the bullet exits the muzzle. This means less unburned gas, lower muzzle pressure, and a much more manageable report for the suppressor to handle. A bolt-action .22 LR rifle, in particular, represents the absolute peak of rimfire sound suppression. With no semi-automatic action sound, and a barrel length of 16 to 18 inches, a bolt gun with a quality can and subsonic ammunition can produce sound levels that border on surreal. You hear the click of the trigger mechanism and the smack of the bullet hitting the target more clearly than the muzzle blast itself.

Semi-automatic .22 rifles are nearly as good. The action cycling introduces some additional noise, but a well-fitted suppressor on a rifle like the Ruger 10/22 or Savage Mark II is still an extremely quiet setup.

Pistols are a bit of a different story. A shorter barrel means more unburned powder, higher muzzle pressure, and a louder report even with a suppressor. A blowback semi-automatic pistol also vents gas through the action during cycling, which adds to the noise signature. You'll still notice a huge reduction compared to unsuppressed fire, but the results won't match what a rifle setup delivers. Pistol suppression is still worth doing, particularly for hearing protection and for reducing the impact on those around you, but if ultimate quiet is the goal, reach for the rifle.

Modular vs. Fixed Length: Which Design Is Right for You?

Both designs have their place, and the right choice depends on what you value most in your suppressed setup.

Fixed Length Suppressors

Fixed-length cans are straightforward. One configuration, and optimized for exactly what they're designed to do. A full-length dedicated rimfire suppressor is almost always going to sound excellent, because there's no compromise involved in the design. If you're not interested in configuring and reconfiguring, and you just want to thread it on and start shooting, a fixed-length suppressor is the way to go.

Two products that consistently stand out in this category are the OCL Titanium 22 and the Dead Air Mask.

The OCL Titanium 22 is a well-built, lightweight can that delivers excellent tone and suppression across both pistol and rifle hosts. Its titanium construction keeps the weight down, and it's a great option for a dedicated rimfire setup that you don't want to fuss with.

The Dead Air Mask has been one of the most respected dedicated rimfire suppressors on the market for years. It's compact, durable, and easily disassembled for cleaning, which is an important feature for any .22 can. The Mask delivers a consistent, impressive sound signature across a wide variety of hosts and has earned a reputation for reliability that speaks for itself.

Modular Suppressors

Modular suppressors allow you to configure the can in different lengths depending on your needs. Want maximum quiet on a rifle? Run the full configuration. Want a shorter, handier package on a pistol? Detach a module and get a more compact profile. This versatility makes modular cans appealing to shooters who run multiple hosts or want a single suppressor that can adapt.

The SilencerCo Switchback is one of the best-known modular rimfire options. It ships in a three-piece design that can be run in two or three-section configurations, letting you balance size against sound attenuation depending on the situation. Its baffles are also user-serviceable, which is a must for any .22 can. In addition to length, it can also be optimized for pistol or rifle suppression.

The Rugged Oculus 22 is another strong modular choice. Rugged built their reputation on durable, versatile suppressors, and the Oculus 22 carries that DNA. Like the Switchback, it offers configurable lengths and is fully cleanable, giving you both flexibility in the field and longevity over thousands of rounds.

If you only ever plan to use one host and you want maximum simplicity, fixed length is the better call. If you like options, run multiple guns, or want to tailor your setup on any given range day, go modular.

Mounting Systems: Do I Need Adapters?

For most rimfire shooters, the answer is no.

The vast majority of .22 LR suppressors use a 1/2x28 threaded mount, which happens to be the same thread pattern found on most factory-threaded .22 rifles and pistols. If you pick up a threaded 10/22, a threaded Mark IV, or almost any other production .22 rimfire host, the odds are good that it's already threaded 1/2x28 and will mate directly to your suppressor with no additional hardware.

That said, there are a couple of scenarios where you may need something extra.

Rifle Thread Spacers are sometimes needed on firearms where the barrel is threaded to rifle specifications rather than rimfire ones. A rifle thread spacer threads onto the muzzle, reducing a longer threaded portion (usually .6") down to the standard rimfire length of .4". It's not needed with many rifle and silencer combinations, but it is worth looking into whether a spacer is recommended for that host.

Thread adapters come into play when a host uses a different thread pattern. Some older or imported .22 pistols use metric threads or uncommon pitches. In those cases, a simple adapter screws onto the host barrel to bring it up to the 1/2x28 standard. Adapters are inexpensive and readily available, so this is rarely a complicated fix.

Before purchasing, just confirm your host's thread pitch and check whether any additional hardware may be necessary for your specific gun. A quick call or email to us will clear that up in a few seconds.

What About Running .22 Through a 5.56/7.62 Rifle Silencer?

This comes up often, and the short answer is that it's not a great idea. It can cause real problems down the road.

Most centerfire rifle suppressors are not rated for .22 LR use. Sure you can shoot a few rounds of .22 LR through a standard rifle can, but "surviving it" and "being a good option for it" are two different things. Running .22 LR through a centerfire suppressor will produce noticeably more sound than a dedicated rimfire can, because the suppressor's baffles are spaced and tuned for the larger, faster, higher-pressure centerfire cartridge. The .22 round simply doesn't interact with the design the same way.

More importantly, .22 LR is exceptionally dirty ammunition. The combination of lead bullets and rimfire priming compound leaves behind lead fouling that accumulates inside the baffles and tube. In a dedicated rimfire suppressor, this is expected and managed through regular cleaning. In a welded or sealed centerfire suppressor, which cannot be disassembled, that fouling has nowhere to go. Over time it builds up, reducing sound performance and, in extreme cases, creating a hardened lead deposit that can cause baffle strikes or ultimately make the suppressor unusable.

Even in a centerfire can that is technically user-serviceable, the lead fouling from .22 LR is difficult to remove compared to carbon fouling, and it tends to accumulate faster than most shooters anticipate.

If you want to shoot suppressed rimfire, do yourself a favor and invest in a dedicated rimfire suppressor. It will sound better, it will be easier to maintain, and your centerfire cans will thank you.

On Cleaning Your .22 Suppressor: When and How?

This is one of the most important maintenance topics for any rimfire suppressor owner. Unlike centerfire suppressors, which many shooters never have to clean, .22 cans require regular attention.

How often should you clean? A good general rule is to clean a dedicated rimfire suppressor every 1,000 to 1,500 rounds, depending on the ammunition you're running. Lead-heavy loads and bulk rimfire ammo tend to foul faster than quality match-grade ammunition. Some shooters prefer to clean after every range session, but in our opinion that's completely unnecessary. We suggest not going beyond 2,500 to 4,000 rounds without a thorough cleaning, especially if you notice any degradation in sound performance. The longer between cleanings, the more difficult it will become.

How do you clean it? There are a few popular methods:

Solvent soaking is the easiest approach. Disassemble the suppressor (this is why user-serviceable baffles matter for rimfire cans), submerge the baffles and tube in a dedicated suppressor cleaner, and let them soak. After a few hours, scrub if necessary with a bronze brush, rinse, and dry completely before reassembly. This is the best method for sealed rimfire silencers without question. Huxwrx Suppressor Sauce is our personal choice.

Ultrasonic cleaners are an excellent option if you have access to one. Fill the tank with a water-based ultrasonic solution, run a cycle, and the process pulls lead fouling out of tight spaces that brushes can't reach. Ultrasonic cleaning is thorough, relatively hands-off, and doesn't require harsh solvents. It's only intended for use with stainless steel baffles, and will destroy the finish on the outer tube. Don't use an ultrasonic for aluminum components or outer tubes, and you'll be fine.

Dry brushing can serve as a quick maintenance step between deeper cleanings. Running a bronze or brass brush through the baffles and wiping down with a dry cloth won't substitute for an actual cleaning, but it can slow the fouling buildup and buy you more rounds between full cleanings.

Whatever method you use, make sure all components are completely dry before reassembly. If you're not sure whether something is fully dry, just let it sit out overnight.

Ready to Find the Right Rimfire Can?

Rimfire suppression is one of the best investments a shooter can make, whether it's your first NFA item or the tenth can in the safe. The combination of affordable entry points, excellent sound reduction, and sheer shooting enjoyment is hard to beat. From a suppressed bolt-action .22 whispering away in the back pasture to an afternoon of plinking cans with a suppressed 10/22, this corner of the suppressor world is where most shooters find the most fun.

The key is making an informed choice from the start. The right ammo, the right host, and the right suppressor for how you shoot will make all the difference between a good experience and a great one.

At Capitol Armory, we live and breathe suppressors. If you're trying to figure out which rimfire can is the right fit for your hosts, your shooting style, and your budget, we're here to help. Reach out to us directly and we'll walk you through your options, answer your questions, and make sure you get the right can the first time. Whether you're looking at a no-fuss fixed-length option or a versatile modular setup, we'll point you in the right direction.

Talk to us today and let's find your next suppressor.