The 9mm Silent Captured Spring is a drop-in component that softens recoil and reduces cycling noise and vibration in your 9mm carbine. The result is a refined rifle that’s a pleasure to shoot. Paired with our 9mm bolt assembly, you have the most reliable 9mm operating system available.

The 9mm Enhanced Version provides the same buffering mass as our standard 9mm SCS. At the same time, we’ve increased overall bolt mass slightly with more room for increased weight if needed. The result is even softer recoil thanks to a further delay in blowback.

The Enhanced Version 9mm SCS is the best option for reliability and durability with hotter ammunition. It’s also the best pairing for use with non-JP bolt assemblies where a central mass needs to be removed. Removing this mass reduces overall reliability from the operating system, which can be offset by the addition weight in the SCS.

Package includes spring and instruction sheet.

Weight: 11.2 oz.

Features:

• Simple, drop-in installation
• Quieter, smoother operation thanks to reduced vibration and friction
• Softened recoil, both felt and actual
• Completes the roller-bearing-like perfection of the JP operating system
• Sufficient deadblow effect to avoid bolt bounce
• Mass tunable via alternate masses
• Enhanced reliability and durability when shooting hotter loads
• Best SCS option for use with non-JP 9mm bolt assemblies

Compatibility

See our FAQ section if you have more compatibility questions.

SCS Buffer Retainer Pin

Because the insertion and removal of the Silent Captured Spring is very difficult with a standard buffer retainer pin, we recommend removing it when installing your SCS. This leaves the SCS “free-floating” in the buffer tube. While this isn’t a problem when the receivers are closed, some shooters find it objectionable. In this case, we have a custom Silent Captured Spring Buffer Retainer Pin and Spring available to retain the SCS without the snagging caused by the Mil-spec design.

Read more about this part here.

Read more about this part here.