We bet you’ve never seen anything quite like this before — a rimfire rifle with an integrally suppressed barrel assembly. Ruger offers this technology with its Silent-SR ISB, a multi-baffle integrally suppressed barrel (ISB) for Ruger 10/22 takedown models. This system reduces sound levels to an average of 113.2 dB with standard velocity ammunition. That’s very impressive — consider that an unsuppressed .22 LR firearm can produce noise levels as high as 140 dB with standard velocity ammunition. That’s well above the threshold where irreversible hearing damage begins. (Source: NC Silencers).

Available only as an aftermarket accessory and subject to an NFA tax stamp, the ISB is an integrally suppressed replacement barrel designed for use with any of the company’s numerous takedown-capable rimfire models (the 10/22 Takedown and 10/22 Takedown Lite rifles and the 22 Charger Takedown pistol) MSRP for the Silent-SR ISB is $629.00.

Watch Integrally Suppressed Barrel in Action. CLICK HERE to View Video on Ruger Site. To get to video, scroll to bottom of Ruger page after jump!

How well does the ISB work? The system was tested by American Rifleman in May 2019. The testers noted that sound reduction varied considerably with ammo types. Also: “Point-of-impact shift between the factory barrel and the ISB was considerable … so plan for some re-zeroing when switching between the two”.

Even if you are not interested in a suppressed rimfire rifle (or live in a state where suppressors are forbidden) we think you’ll be interested in Ruger’s technology. Here’s what Ruger says about its ISB (Integrally Suppressed Barrel) for the 10/22 Take-down:

The Silent-SR ISB quickly and easily assembles to any Ruger 10/22 Takedown or 22 Charger Takedown, and features an induction-hardened breech with cold hammer-forged barrel that provide easy takedown and accurate return-to-zero.

Reducing sound pressure levels of .22 LR to an average of 113.2 dB with standard velocity ammunition, a 10/22 Takedown rifle equipped with the Silent-SR ISB is as quiet as a bolt-action rifle with a thread-on silencer. The relatively long barrel of the Silent-SR ISB (compared to other integral suppressors) means the bullet generates energy near that of a 16″ gun for consistent, accurate and effective performance on target. The pushed-cone baffle geometry has been stretched to utilize the volume under the barrel maximizing suppression of the gunshot without disturbing the travel of the bullet.

Even seen an integrally suppressed rifle? Ruger offers this technology with its new Silent-SR ISB, a multi-baffle integrally suppressed barrel (ISB) for Ruger 10/22 takedown models. This system reduces sound levels to an average of 113.2 dB with standard velocity ammunition. That’s very impressive — consider that an unsuppressed .22 LR firearm can produce noise levels as high as 140 dB with standard velocity ammunition. That’s well above the threshold where irreversible hearing damage begins. (Source: NC Silencers).

Even if you are not interested in a suppressed rimfire rifle (or live in a state where suppressors are forbidden) we think you’ll be interested in Ruger’s technology. The Silent-SR employs a long, multi-element “baffle stack” that can be easily removed for cleaning.

Watch Integrally Suppressed Barrel in Action. CLICK HERE to View Video on Ruger Site. Scroll to bottom of Ruger page after jump!

Here’s what Ruger says about its new ISB (Integrally Suppressed Barrel) for the 10/22 Take-down:

The Silent-SR ISB quickly and easily assembles to any Ruger 10/22 Takedown or 22 Charger Takedown, and features an induction-hardened breech with cold hammer-forged barrel that provide easy takedown and accurate return-to-zero.

Reducing sound pressure levels of .22 LR to an average of 113.2 dB with standard velocity ammunition, a 10/22 Takedown rifle equipped with the Silent-SR ISB is as quiet as a bolt-action rifle with a thread-on silencer. The relatively long barrel of the Silent-SR ISB (compared to other integral suppressors) means the bullet generates energy near that of a 16″ gun for consistent, accurate and effective performance on target. The pushed-cone baffle geometry has been stretched to utilize the volume under the barrel maximizing suppression of the gunshot without disturbing the travel of the bullet.

Disassembly for cleaning is as simple as separating the barrel from your firearm and loosening the Silent-SR ISB’s single assembly screw using the included 5/32″ hex key tool. Once loose, pull the screw to remove all six 17-4 stainless steel baffles, spacer and front cap free of the sleeve for cleaning. The sealed baffles keep the fouling away from the serialized sleeve, yet easily come apart even after thousands of rounds. Finished with Cerakote, the Silent-SR ISB is engineered and built for a lifetime of hard use without clogged ports, seized components or loss of suppression that often plague other integrally suppressed rimfire barrels.