SilencerCo Sparrow 22 Review: Is the Original Rimfire Can Still Worth It?

The SilencerCo Sparrow 22 was the first suppressor SilencerCo ever built, and nearly two decades later it is still one of the best-selling rimfire cans on the market. That kind of longevity usually means one of two things: the design was right the first time, or nobody has bothered to improve on it. This review covers which it is, what the Sparrow gives up to newer competition, and whether the cans costing $150 more are worth it.

What You Are Actually Choosing Between

Four rimfire cans account for most of what buyers in this range seriously consider. Line them up and something unexpected shows.

At full length, the cheapest can here is the heaviest and the Sparrow is the lightest. The Faxon undercuts the Sparrow by four dollars and weighs an ounce and a half more. The Mask HD costs $145 more and has a titanium tube, and it still comes in a tenth of an ounce heavier than the Sparrow. The Oculus costs $177 more and is heavier again at standard length.

So the extra money is not buying a lighter or shorter suppressor. It is buying something else, and it is worth being clear about what.

The Oculus buys you a second configuration. Drop it to 3.25 inches and 4.3 ounces and you have a genuinely compact pistol can. That is real capability the Sparrow cannot match at any price.

The Mask HD buys you an 850 ft-lb energy rating and a titanium tube. That is more thermal and pressure headroom than rimfire alone requires, which matters if you plan to run 5.7x28mm hard.

The Faxon buys you tunability. Six baffles, three solid and three perforated, that you can rearrange to trade backpressure against tone. It is the heaviest option because Faxon chose 17-4 PH stainless to carry a full-auto rating on .22 Mag and 5.7x28mm rather than optimizing for weight.

And the Sparrow buys you the least complicated version of the job: one configuration, no tuning decisions, the lightest and shortest package of the four at full length, at the second-lowest price.

Specs at a Glance

What the Sparrow 22 Does Well

The MPC cleaning system is still the reason people buy it. Rimfire ammunition deposits lead, wax, and carbon at a rate centerfire shooters never deal with, and on a sealed or poorly designed can that fouling eventually welds the thing together. SilencerCo’s Multi-Part Containment design answers that directly: unscrew the back cap, slide the outer tube off, and peel two half-tubes away from a monolithic core. Dealers commonly note that many rimfire cans become difficult to disassemble after a few hundred rounds, which is exactly the problem MPC was built to avoid.

It is all steel, with no aluminum. The all-stainless construction is well suited to the fouling and repeated cleaning a rimfire suppressor sees, without the cleaning limitations that aluminum components can introduce. That is part of why a nearly two-decade-old design still sells.

The 1.06-inch outer diameter clears iron sights on most .22 hosts. A wider can forces you into taller sights or shooting over the top of the suppressor. This one generally does not.

Caliber coverage is genuinely broad. .22 LR, .22 WMR, .22 Hornet, .17 HMR, .17 WSM, and 5.7x28mm from one can. The 5.7 rating in particular is a real bonus for Five-seveN and PS90 owners, and SilencerCo’s Delta Adapters handle non-standard thread patterns.

Full-auto rated on .22 LR. Not just a collector’s spec line. If you run a semi-auto .22 at any serious pace, the can keeps up.

For the wider field, our best .22 suppressors guide compares more options across price points.

Why You Cannot Compare the Decibel Numbers

SilencerCo publishes 112.7 dB for the Sparrow on .22 LR. Faxon publishes 114 dB and a 28.8 dB reduction. Those numbers look comparable. They are not.

Manufacturer sound testing varies by host firearm, ammunition, microphone placement, and environmental conditions, and every brand runs its own protocol. Comparing a figure from one company’s test against another’s tells you very little.

The useful exception is standardized third-party testing. At the 2025 Silencer Summit, Thunderbeast Arms tested 27 .22 suppressors under identical conditions on the same host with the same ammunition. That is the kind of comparison that means something, and it is worth seeking out over any manufacturer’s own figure.

Faxon is unusually candid about this in their own marketing, explaining that their can is not the quietest at the Summit because the structural mass required for a full-auto rating on higher-pressure cartridges adds weight, and weight affects sound readings. That is a manufacturer telling you a tradeoff rather than hiding it, and it is the right way to read all of these numbers.

Known Issues

No short configuration. This is the Sparrow’s real limitation against current competition. Both the Oculus and the Faxon convert to compact lengths under four inches. The Sparrow is 5.08 inches and that is the only length it comes in. On a compact .22 pistol that is a meaningful difference in handling.

First-round pop can be noticeable on short-barreled pistols. Independent PEW Science testing found the Sparrow’s overall suppression competitive with modern designs, but its first-round-pop performance on a short-barreled pistol was a notable weakness. That matters more for pistol buyers than for someone primarily running the Sparrow on a rimfire rifle.

Do not put solvents or an ultrasonic cleaner on the outer tube. SilencerCo specifically warns that doing so may damage the finish. Internal components can take solvents, light abrasive media, or chemical dips, but the tube itself cannot. Several competing cans have no such restriction, and it is an easy mistake to make if you are used to cleaning other suppressors.

Three O-rings you will eventually replace. Two size-18 O-rings seat at each end of the monolithic core and one size-13 engages the muzzle threads. They ship installed, and replacements are sold separately. Not a flaw, but a consumable to know about.

It is a nearly two-decade-old design. Newer cans have modularity, tunable baffle stacks, and titanium construction. The Sparrow does one thing, has always done it, and the core design has changed very little.

Who Should Skip It

If you primarily shoot a compact .22 pistol. The Oculus at 3.25 inches or the Faxon at 3.87 inches will handle noticeably better, and that is worth the money if it is your main use.

If you want to tune the can. The Faxon’s rearrangeable baffle stack lets you trade backpressure against sound character. The Sparrow has no such adjustment.

If you plan to run 5.7x28mm heavily. The Sparrow is rated for it, but the Mask HD’s 850 ft-lb energy rating gives more margin for sustained use on the higher-pressure cartridge.

If you want to clean it any way you like. The outer tube restriction is real, and the Faxon explicitly permits ultrasonic cleaning.

The Alternatives in Detail

Faxon Twenty-Toucan — the direct price competitor

At around $253 this undercuts the Sparrow by four dollars, which makes it the genuine head-to-head comparison rather than a budget fallback. It converts between 3.87 inches at 5.1 ounces and 5.75 inches at 8 ounces, and the six-baffle stack — three solid, three perforated — can be rearranged to shift backpressure and tone. Full-auto rated across .17 HMR, .22 LR, and .22 Mag with no barrel restriction, and 5.7x28mm with a 5-inch minimum barrel. Faxon permits solvent, brushes, or ultrasonic cleaning and recommends servicing every 300 to 500 rounds.

The tradeoff is weight. At 8 ounces full-length it is the heaviest can here by a clear margin, and Faxon is upfront that the 17-4 PH construction required for those full-auto ratings is why.

Check the Faxon Twenty-Toucan at Guns.com →

Dead Air Mask HD — the heavy-duty option

Around $402 for a 5.1-inch, 6.6-ounce can built with a Grade 9 titanium tube and 17-4 stainless baffles. Rated .22 LR through 5.7x28mm with an 850 ft-lb energy rating, full-auto rated, no barrel restrictions, and owners consistently report little to no first-round pop on both rifles and pistols.

The honest tradeoff: at full length it weighs marginally more than the $257 Sparrow despite the titanium. You are buying pressure and thermal headroom, not weight savings. More on the brand in our Dead Air suppressors guide.

Check the Dead Air Mask HD at Guns.com →

Rugged Oculus 22 — the modular one

Around $434, and the most configurable can here. ADAPT modular construction converts between 3.25 inches at 4.3 ounces and 5.25 inches at 6.9 ounces, all 17-4 stainless, rated for belt-fed .22 LR and up to 5.7x28mm. Keyed baffles maintain alignment after cleaning, which addresses a real concern with disassemblable cans.

The tradeoff is price and complexity — it is the most expensive option and the short configuration is measurably louder, which owners readily acknowledge. More on the brand in our Rugged Suppressors guide.

Check the Rugged Oculus 22 at Guns.com →

What It Actually Costs

The purchase price is no longer the whole story, and it changed recently in the buyer’s favor.

The federal transfer tax rate on suppressors is now $0. For years the stamp added $200 to every suppressor purchase, which on a $257 can was a 78% surcharge. That is gone. Suppressors remain regulated under the National Firearms Act and you still submit an ATF eForm 4 through a licensed dealer, but the federal transfer tax rate is now $0.

You still need a dealer and you still wait. The can stays with your dealer until the form is approved. Processing times have improved substantially compared with a few years ago, but this is not a same-day purchase.

Budget for the things around it. Thread adapters if your host is not 1/2×28, replacement O-rings eventually, cleaning supplies, and subsonic ammunition if you want the quiet the can is capable of. High-velocity or other supersonic .22 LR produces a ballistic crack downrange that no suppressor can eliminate. Subsonic ammunition avoids that component of the noise.

If the total is more than you want to pay at once, our gun financing guide covers the options, and our guide to buying a gun online explains the dealer transfer process.

Living With It

Clean it before it needs it. SilencerCo recommends cleaning the Sparrow 22 after roughly 1,000 rounds, although more frequent cleaning may be appropriate depending on ammunition and use. Rimfire deposits lead, wax, and carbon heavily, so cleaning before the suppressor becomes difficult to disassemble can make the job considerably easier.

Follow SilencerCo’s cleaning restriction. Internal components tolerate solvents, light abrasives, and chemical dips. The outer tube does not — solvents and ultrasonic cleaning may damage the finish. Our .22 LR cleaning kit guide covers what works for rimfire fouling generally.

Keep spare O-rings. Two size-18 and one size-13. They are inexpensive wear items, so keeping spares on hand makes sense.

Use subsonic ammunition for the quietest results. The suppressor handles the muzzle blast; it cannot do anything about a supersonic crack downrange. Our .22 LR ammo guide covers what works.

Respect the caliber ratings. The Sparrow is rated for a specific list of cartridges. Running an unrated configuration can damage the suppressor and potentially cause injury.

SilencerCo Sparrow 22 FAQ

Bottom Line

Buy the SilencerCo Sparrow 22 at around $257 if you want the simplest good answer. At full length it is the shortest and lightest of the four, all stainless, full-auto rated on .22 LR, and the MPC system makes the cleaning you will actually be doing about as painless as rimfire gets.

Buy the Rugged Oculus 22 if you want a short configuration. At 3.25 inches and 4.3 ounces it becomes a genuinely compact pistol can, and that is capability the Sparrow cannot match at any price.

Buy the Dead Air Mask HD if you are running 5.7x28mm seriously. The 850 ft-lb energy rating is the reason, not the weight.

Buy the Faxon Twenty-Toucan if you want to tune it or want modularity at the Sparrow’s price. You will carry an ounce and a half more for it.

With the federal suppressor transfer tax now at $0, the whole category is cheaper to enter than it has been in decades. If you have been putting off a rimfire can, the math just changed.

Continue Your Research

Suppressors are regulated under the National Firearms Act. The ATF’s state laws and published ordinances resource is the starting point for confirming what applies where you live.