SilencerCo Sparrow 22

What calibers can I use it on?

The Sparrow covers a solid range of rimfire and small-bore centerfire cartridges: .22 LR, .22 WMR, .22 Hornet, .17 HMR, .17 WSM, and FN 5.7x28mm. Full-auto is approved on .22 LR. That 5.7x28mm rating is a nice bonus if you're running a PS90 or a 5.7 pistol. The Sparrow pulls double duty there without any fuss. One thing to keep in mind is that cast lead projectiles will foul the interior faster than jacketed or copper-washed rounds, so your cleaning intervals will vary depending on what you feed it.

Is it easy to clean? How do I clean it?

This is honestly one of the Sparrow's biggest selling points. SilencerCo's patented Multi-Part Containment (MPC) system makes the whole process straightforward. The outer sleeve is made of two clamshell halves that pull away from the monocore with no tools required. Once you have it apart, the interior of the clamshells can be scraped clean with something as simple as a coin. The monocore itself gets dunked in your cleaning solution of choice and brushed out. Most high-volume shooters find they can run 2,000+ rounds between cleanings. The key thing the MPC system solves is the classic rimfire suppressor nightmare: baffles seizing together from carbon buildup. Because the Sparrow's core is a single monolithic piece rather than a stack of individual baffles, that problem simply doesn't exist. Pick up some suppressor cleaning solution if you're feeling lazy.

Does it have any first-round pop?

It depends on the host. On rifle platforms, there is no discernible first-round pop. On pistol hosts, there is a slight first-round pop. This is normal behavior for a monocore rimfire suppressor. Residual oxygen in the baffles ignites on the first shot. After that first round, the gas inside the can displaces the oxygen and subsequent shots are quieter and more consistent. If you're shooting from a rifle and first-round pop is a concern, you're in good shape. Pistol shooters will just notice it on round one.

How does it attach to my host weapon?

The Sparrow uses a standard direct-thread 1/2x28 mount, which is the most common thread pitch on rimfire rifles and pistols. On most .22 hosts, you simply remove the thread protector and thread the Sparrow on. For pistols with non-standard or metric thread pitches, SilencerCo makes numerous adapters to cover a wide range of popular platforms. Check your host's thread pitch before ordering so you know whether you'll need an adapter. If you're unsure, feel free to reach out to us and we'll help you nail down the right fit.

What's the difference between the Sparrow and the Switchback?

Both are excellent SilencerCo rimfire suppressors, but they take different approaches. The Sparrow is the original. It's a simple, rugged, all-stainless design with a monolithic baffle core. It's proven, easy to maintain, and covers all the same rimfire and 5.7x28mm calibers. The Switchback 22 is the newer, more modular sibling. Its tube splits into two halves, giving you three length options and four total configurations. The shortest Switchback configuration is about 3 inches and 3.6 oz, which is much more compact than the Sparrow for subcompact pistol use. In full-length configuration, the Switchback 22 stretches to 5.2 inches, and the baffle stack is reversible to optimize for either rifles or pistols. The Switchback 22 also uses individual removable baffles rather than a monocore, which some shooters prefer for cleaning. The tradeoff is price and complexity. The Switchback 22 costs significantly more. If you want a simple, reliable, proven suppressor at a lower price point, the Sparrow is the pick. If you want maximum configurability and various length options, the Switchback 22 earns its premium.

What does "monocore baffle" mean?

A monocore baffle is a single machined piece that contains all of the suppressor's baffles rather than a stack of individual baffle plates that are stacked and held together inside the tube. In a traditional stacked-baffle design, each individual baffle is a separate piece. Over time, with dirty rimfire ammunition, carbon buildup can cause those separate pieces to seize together, making disassembly a miserable chore. A monocore eliminates that problem entirely. You pull it out as one unit, clean it, and you're done. The downside is that you can't clean between individual baffle faces as thoroughly as you could with a fully disassembled stack, but for most rimfire shooters the tradeoff is well worth it. The Sparrow's monocore is one of the main reasons it's stayed at the top of the rimfire category for as long as it has.

Can I use it on my AR-15 in 5.56? The thread pitch is the same.

Short answer: no. While it's true that 5.56 NATO barrels are typically threaded at 1/2x28, the Sparrow is not rated for 5.56 NATO or any centerfire rifle cartridge in that pressure class. The Sparrow is a rimfire suppressor built to handle the relatively low pressures and bore diameters of .22-caliber cartridges. A 5.56 round generates dramatically higher chamber pressures and produces much more gas volume than anything the Sparrow is designed to contain. Running 5.56 through the Sparrow would damage the suppressor at minimum, and could be genuinely dangerous. If you want a suppressor for your AR, check out our rifle suppressor lineup. There are plenty of excellent options rated for 5.56 and beyond.