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

GEN 2 AR-15 Silent Captured Spring Builder with Alternative Spring Pack H2 Buffer Version Includes SCS unit, five alternative weight springs and spacer to allow for installation in both carbine- and rifle-length buffer tubes. Recommended Use: Short-barreled rifles (SBRs) Suppressed weapons Rifles recommended to use an H2/H3 buffer Select-fire rifles Piston-operated rifles