JP Enterprises 12-Pack JPSCS2/VMOS Replacement O-ring w/Spacer Shim 9mm, Black

Ensure the optimal performance and longevity of your JP Silent captured spring or Variable Mass Operating system (VMOS) bolt carrier with our comprehensive O-ring replacement kit. Designed to seamlessly replace any worn, deformed or lost O-rings, this kit is essential for maintaining the integrity and functionality of your firearm's operating system. Regular inspection and timely replacement of O-rings are crucial, especially when signs of fraying or cracking appear. This is particularly importa