JP Enterprises AR-10 Silent Captured Spring Builder Kit H2 Buffer | Gen 2

JP Enterprises AR-10 Silent Captured Spring Builder Kit H2 Buffer | Gen 2

The JP Enterprises Gen 2 Silent Captured Spring Builder Kit with H2 configuration is engineered for AR-10 and large-frame .308-pattern rifles that require a refined recoil system with tunable operating characteristics. Designed as a replacement for traditional buffer and recoil spring assemblies, the JPSCS2-10K-H2 combines JP’s self-contained captured spring system with an H2-equivalent mass configuration to help deliver smoother cycling, reduced spring noise, and improved operating consistency in large-frame AR platforms.

Unlike conventional AR recoil systems that allow the spring and buffer to move independently within the receiver extension, the Silent Captured Spring design uses a guided internal assembly that controls spring movement throughout the recoil cycle. This reduces the metallic spring resonance and “sproing” commonly associated with standard buffer systems while also creating a more refined cycling feel during charging and live fire.

The Builder Kit configuration is intended for users assembling or tuning custom AR-10, LR-308, and large-frame gas gun builds where recoil system tuning may be beneficial for specific barrel lengths, gas system configurations, suppressor use, or ammunition types. The included H2-equivalent mass arrangement provides additional reciprocating weight compared to lighter SCS configurations, helping support reliable cycling characteristics in many .308 Winchester and 6.5 Creedmoor rifle setups.

Generation 2 Silent Captured Spring systems feature a redesigned aluminum guide rod assembly along with updated mass architecture intended to more closely correspond with conventional AR buffer weight standards. The captured design also simplifies installation and maintenance by keeping the spring assembly self-contained during receiver disassembly.

The JPSCS2-10K-H2 is compatible with many AR-10 and LR-308 pattern rifles using standard carbine-length buffer tubes, though compatibility can vary between manufacturers due to the lack of universal dimensional standards within the large-frame AR market. Builders should verify receiver extension depth, bolt carrier compatibility, spacer requirements, and overall recoil system configuration before installation.

JP Silent Captured Spring systems are widely used in precision-oriented gas guns, competition rifles, recreational large-frame AR builds, and suppressed rifle configurations where smoother cycling behavior and reduced operating noise are desired. The tunable architecture also allows experienced builders to fine-tune recoil impulse characteristics to better match individual rifle setups.

• Designed for AR-10, LR-308, and large-frame AR platforms
• Gen 2 Silent Captured Spring system
• H2-equivalent buffer mass configuration
• Self-contained captured recoil spring assembly
• Reduces traditional buffer spring vibration and operating noise
• Smoother cycling characteristics compared to standard buffer systems
• Builder Kit configuration for custom tuning applications
• Aluminum guide rod assembly
• Compatible with many carbine-length receiver extension setups
• Made in the USA

Compatibility Notes: Large-frame AR platforms do not follow a universal specification standard. Compatibility should be verified with your specific AR-10 or LR-308 receiver set, buffer tube, bolt carrier group, and gas system configuration prior to installation.