|GEN 2 AR-15 Silent Captured Spring Builder with Alternative Spring Pack
Includes SCS unit, five alternative weight springs and spacer to allow for installation in both carbine- and rifle-length buffer tubes.
The JPSCS2-15 will not function with older Primary Weapon Systems (PWS) bolt carriers. The design of the carrier will prevent the rifle from cycling.
See our FAQ section if you have more compatibility questions.
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