SilencerCo Sparrow 22 from Defending America LLC near Monroe, Charlotte, NC

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.