Chrome-silicon rifle-length action spring for AR-15 rifle and A5-style buffer systems.
The KAK Industry AR-15 Rifle Length Buffer Spring is the long action spring used in an A2 rifle receiver extension. It is wound from chrome-silicon wire with a black oxide finish.
KAK lists it for AR-15 rifle-length buffer systems and A5-style buffer systems, which also run a rifle-length spring. It is too long for a carbine tube.
Add the KAK Industry AR-15 Rifle Length Buffer Spring to your build and see how it enhances your platform.