Includes spacer to allow for installation in both carbine-length 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

Compatibility
The JPSCS-AR15 will not function with Primary Weapon Systems PWS bolt carriers. The design of the carrier will prevent the rifle from cycling.