JP Gen 2 Bolt/Carrier Kit - 9mm

The JP Gen 2 Bolt/Carrier Kit – 9mm is a redesigned bolt assembly for AR-9 platform rifles and carbines. Engineered for compatibility with JP Silent Captured Spring (SCS) systems, this second-generation design eliminates the need for a separate internal mass component while maintaining operational weight. The system redistributes mass within the operating components and is compatible with both full-stroke and short-stroke JP Silent Captured Springs. It is intended for use in 9mm blowback-operated AR platforms and supports last-round bolt hold open with compatible receivers.

This 9mm AR bolt assembly features a reduced stroke length and refined internal geometry. Additional updates include a tighter firing pin channel and a high-energy tumble finishing process for a consistent surface appearance. As with all AR-pattern components, proper fit and function should be verified with your specific lower receiver, upper receiver, and recoil system configuration prior to installation.

 
Specifications

• Platform Compatibility: AR-9 / 9mm AR blowback systems
• Operating System Compatibility: JP Silent Captured Spring (full-stroke and short-stroke versions)
• Design: Revised 9mm bolt assembly without separate internal mass (slug)
• Stroke Length: Reduced stroke design
• Firing Pin Channel: Tighter tolerance for reduced pin wear
• Finish: High-energy tumble process
• Functionality: Supports last-round bolt hold open with compatible receivers