JP AR-15 SCS Kit 5 Spring Weights, Silent Captured Recoil Spring, Standard Mass Version, Gen 2

Maintaining all the benefits of our polished buffer springs and proprietary LMOS™ buffer, this combination buffer-spring assembly eliminates the friction of standard buffer components resulting in outstanding smoothness and sound abatement. The AR-15 version fits and functions in any gas-operated AR-15 variant, regardless of caliber. Includes SCS unit, five alternative weight springs and spacer to allow for installation in both carbine- and rifle-length buffer tubes. GEN 2 SCS Improvements: New aluminum guide rod cuts overall weight Heavier masses translate to more buffering mass and chance of bolt bounce Full correspondence between SCS masses and H1, H2 and H3 buffers Interchangeable buffers allow conversion between AR-15 and AR-10 models (and vice versa) Recommended for rifles without an adjustable gas block. For rifles with an adjustable gas block, the assembly without the extra springs is sufficient: https://secure.arnzenarms.com/product/jp-rifles/ar-15/3-gun-gear/3-gun/competition/jp-silent-captured-recoil-spring-223-556-ar-15