SilencerCo Sparrow 22

SilencerCo Sparrow 22 Details

The SilencerCo Sparrow 22 is the suppressor that started it all. It was the first suppressor SilencerCo ever built, and after fifteen-plus years it remains one of the most popular rimfire suppressors on the market. Built entirely from 17-4 stainless steel, the Sparrow 22 weighs 6.5 oz, measures 5.08" long, and carries a 1.07" outer diameter slim enough to clear factory iron sights on most .22 hosts. It is rated for .22 LR, .22 WMR, .17 HMR, .17 WSM, 22 Hornet, and 5.7x28mm, and is full-auto rated on .22 LR. The Sparrow 22 mounts directly on standard 1/2x28 threads and is compatible with SilencerCo's Delta Adapters for non-standard thread patterns.

Features and Benefits

• Constructed entirely from 17-4 stainless steel — no aluminum components to corrode or crack under repeated use with dirty rimfire ammunition
• 1.07" outer diameter; slim enough to clear factory sights on most .22 LR pistols and rifles without modification
• Full-auto rated on .22 LR; multi-caliber compatible with .22 WMR, .17 HMR, .17 WSM, 22 Hornet, and 5.7x28mm
• Patented MultiPart Containment (MPC) internal architecture: two half-tubes surround a monolithic baffle stack and pull away from the core in seconds without tools for fast, thorough cleaning
• Direct-thread 1/2x28 mounting; compatible with SilencerCo Delta Adapters for pistols with non-standard thread patterns
• Recommended cleaning interval: every 1,000 rounds, though more frequent cleaning may be needed depending on ammo type
• Limited Lifetime Warranty backed by SilencerCo, extending to the original registered purchaser

How the MPC System Works

The Sparrow 22's internal MPC (MultiPart Containment) design is what originally set it apart from every other rimfire suppressor available when it launched. To disassemble: unscrew the back cap, slide the outer tube off, and peel the two half-tubes away from the monolithic core. Three O-rings seal the system — two size-18 O-rings seat at each end of the monolithic core, and one size-13 O-ring engages the muzzle threads. The Sparrow 22 ships with all three O-rings installed. Replacement O-rings are available separately. Do not use solvents or ultrasonic cleaners on the outer tube, as finish damage may result; internal components can be cleaned with solvents, light abrasive media, or chemical dips.

SilencerCo Sparrow 22 Specifications

SilencerCo builds to exacting standards. Here's exactly what you're getting.

• Caliber: .22 LR (full-auto rated), .22 WMR, .17 HMR, .17 WSM, 22 Hornet, 5.7x28mm
• Length: 5.08"
• Weight: 6.5 oz
• Diameter: 1.07"
• Materials: 17-4 stainless steel
• Mounting: Direct thread 1/2x28 (Class 3A), threads .400" in length; Delta Thread Rifle Spacer required on threads .600"–.650" in length
• User-Serviceable: Yes, tool-free disassembly via MPC system
• Full-Auto Rated: Yes, on .22 LR only
• Warranty: Limited Lifetime Warranty (original registered purchaser)

For a full walkthrough of the suppressor buying process from purchase to tax stamp, see our guide on how to buy a suppressor.

What's in the Box

• SilencerCo Sparrow 22 suppressor (outer tube, back cap, two half-tubes, monolithic core assembled)
• Three O-rings pre-installed (two size-18, one size-13)
• Field Manual

Note: Delta Adapters are sold separately and are not included in the box.

Maintenance Notes

Clean the Sparrow 22 approximately every 1,000 rounds, though more frequent cleaning may be needed depending on ammunition. Internal components — the monolithic core and half-tubes — can be cleaned using solvents, light abrasive media, or chemical dips. Do not use solvents or ultrasonic cleaners on the outer tube. If the outer tube finish becomes discolored, wipe with a high-quality gun oil to restore factory condition. Dry all components thoroughly before reassembly.

Frequently Asked Questions

What calibers is the SilencerCo Sparrow 22 compatible with?

The SilencerCo Sparrow 22 is compatible with .22 LR, .22 WMR, .17 HMR, .17 WSM, 22 Hornet, and 5.7x28mm. Full-auto fire is approved on .22 LR only.

What is the weight and size of the SilencerCo Sparrow 22?

The SilencerCo Sparrow 22 weighs 6.5 oz and measures 5.08" in length with a 1.07" outer diameter. The slim profile clears factory iron sights on most .22 LR pistols and rifles without modification.

How does the SilencerCo Sparrow 22 disassemble for cleaning?

The Sparrow 22 uses SilencerCo's patented MPC (MultiPart Containment) system for tool-free disassembly. To clean: unscrew the back cap, slide the outer tube off, and peel the two half-tubes away from the monolithic core. SilencerCo recommends cleaning after approximately 1,000 rounds, with more frequent cleaning depending on ammo type.

What thread pattern does the Sparrow 22 use?

The SilencerCo Sparrow 22 mounts on standard 1/2x28 (Class 3A) threads. Thread length must be .400" for direct mounting. Barrels with thread lengths of .600" to .650" require the Delta Thread Rifle Spacer sold separately. Delta Adapters are available for pistol applications with non-standard thread patterns.

Is the SilencerCo Sparrow 22 full-auto rated?

Yes. The SilencerCo Sparrow 22 is full-auto rated specifically on .22 LR. Full-auto use is not approved on other compatible calibers.

What does the SilencerCo Sparrow 22 ship with?

The SilencerCo Sparrow 22 ships assembled with the outer tube, back cap, two half-tubes, and monolithic core, plus three O-rings pre-installed. Delta Adapters are sold separately and are not included in the box.

What material is the SilencerCo Sparrow 22 made from?

The SilencerCo Sparrow 22 is built entirely from 17-4 stainless steel. This construction makes it exceptionally durable for extended use with rimfire ammunition, which is notoriously dirty compared to centerfire.

What is the warranty on the SilencerCo Sparrow 22?

The SilencerCo Sparrow 22 is backed by a Limited Lifetime Warranty extending to the original registered purchaser. SilencerCo will repair or replace the suppressor at no charge, excluding shipping, under covered conditions. Register at silencerco.com/register.