Includes spacer to allow for installation in both carbine-length and rifle-length buffer tubes.
- Short-barreled rifles SBRs
- Suppressed weapons
- Rifles recommended to use an H2/H3 buffer
- Select-fire rifles
- Piston-operated rifles
The JPSCS-AR15 will not function with Primary Weapon Systems PWS bolt carriers. The design of the carrier will prevent the rifle from cycling.