JP Enterprises Gen 2 Silent Captured Recoil Buffer Spring Assembly for AR-15Jp Enterprise$132.95
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Jp Enterprise
The JP Enterprises Silent Captured Heavy Recoil Buffer Spring Assembly Gen 2 is a drop-in upgrade designed to dial in your AR-15's recoil impulse and running behavior without permanent modifications. If you shoot a short-barreled rifle, run a suppressor, or own a piston gun, this captured-spring system addresses the real-world performance gaps in standard buffer setups: reduced friction, quieter operation, and smoother cycling. The core upgrade is the custom-ground spring paired with JP's LMOS buffer design—together they're engineered to eliminate the harsh vibration and clatter you get from conventional springs.
What makes the Gen 2 worth the investment is the heavier buffering mass and the tuning flexibility it brings. The H2 buffer weighs approximately 4.7 oz and combines two tungsten weights with one steel weight for consistent, predictable recoil management across different carbine configurations. The included aluminum guide rod keeps overall assembly weight in check, and a spacer is included so the system works in both M4-style collapsible tubes and longer rifle-length tubes for fixed stocks.
JP built the Gen 2 with modularity in mind. If your rifle runs a bit soft or fast out of the box, you can swap in optional Auxiliary Spring Rate Kits to fine-tune the spring rate without replacing the whole assembly. This is especially useful if your AR lacks an adjustable gas block—instead of guessing at gas settings, you're tuning the buffer itself. Interchangeable buffers also mean you can convert between AR-15 and AR-10 platforms if needed, making this system a solid long-term addition to your AR ecosystem.
| Buffer Weight | Approximately 4.7 oz (H2 heavy) |
| Buffer Composition | Two tungsten weights + one steel weight |
| Guide Rod Material | Aluminum |
| Buffer Tube Compatibility | M4 collapsible and rifle-length fixed (with included spacer) |
| Recommended Uses | Short-barreled rifles, suppressed firearms, select fire rifles, piston-operated rifles |
| Platform | AR-15 (convertible to AR-10 with interchangeable buffer) |
| Installation | Drop-in, no permanent modifications |
Yes. The Gen 2 comes with a spacer that allows installation in both M4-style carbine-length tubes and longer rifle-length tubes, so you can use it in either configuration.
Yes. The Gen 2 is specifically recommended for short-barreled rifles, suppressed firearms, select fire rifles, and piston-operated rifles—all setups where standard buffers tend to underperform or cause excessive vibration.
Yes. You can purchase optional Auxiliary Spring Rate Kits to customize the spring rate of your SCS for optimized performance, particularly useful if your rifle lacks an adjustable gas block.
The interchangeable buffer design allows conversion between AR-15 and AR-10 platforms, so you can use compatible buffers to swap between the two with this system.
Jp Enterprise
The JP Enterprises Silent Captured Heavy Recoil Buffer Spring Assembly Gen 2 is a drop-in upgrade designed to dial in your AR-15's recoil impulse and running behavior without permanent modifications. If you shoot a short-barreled rifle, run a suppressor, or own a piston gun, this captured-spring system addresses the real-world performance gaps in standard buffer setups: reduced friction, quieter operation, and smoother cycling. The core upgrade is the custom-ground spring paired with JP's LMOS buffer design—together they're engineered to eliminate the harsh vibration and clatter you get from conventional springs.
What makes the Gen 2 worth the investment is the heavier buffering mass and the tuning flexibility it brings. The H2 buffer weighs approximately 4.7 oz and combines two tungsten weights with one steel weight for consistent, predictable recoil management across different carbine configurations. The included aluminum guide rod keeps overall assembly weight in check, and a spacer is included so the system works in both M4-style collapsible tubes and longer rifle-length tubes for fixed stocks.
JP built the Gen 2 with modularity in mind. If your rifle runs a bit soft or fast out of the box, you can swap in optional Auxiliary Spring Rate Kits to fine-tune the spring rate without replacing the whole assembly. This is especially useful if your AR lacks an adjustable gas block—instead of guessing at gas settings, you're tuning the buffer itself. Interchangeable buffers also mean you can convert between AR-15 and AR-10 platforms if needed, making this system a solid long-term addition to your AR ecosystem.
| Buffer Weight | Approximately 4.7 oz (H2 heavy) |
| Buffer Composition | Two tungsten weights + one steel weight |
| Guide Rod Material | Aluminum |
| Buffer Tube Compatibility | M4 collapsible and rifle-length fixed (with included spacer) |
| Recommended Uses | Short-barreled rifles, suppressed firearms, select fire rifles, piston-operated rifles |
| Platform | AR-15 (convertible to AR-10 with interchangeable buffer) |
| Installation | Drop-in, no permanent modifications |
Yes. The Gen 2 comes with a spacer that allows installation in both M4-style carbine-length tubes and longer rifle-length tubes, so you can use it in either configuration.
Yes. The Gen 2 is specifically recommended for short-barreled rifles, suppressed firearms, select fire rifles, and piston-operated rifles—all setups where standard buffers tend to underperform or cause excessive vibration.
Yes. You can purchase optional Auxiliary Spring Rate Kits to customize the spring rate of your SCS for optimized performance, particularly useful if your rifle lacks an adjustable gas block.
The interchangeable buffer design allows conversion between AR-15 and AR-10 platforms, so you can use compatible buffers to swap between the two with this system.