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Availability: In Stock
Current Stock: Out of stock
The Kynshot RB5000HP is a hydraulic recoil buffer engineered specifically for over-gassed AR-15 rifles and CMMG radial delayed blowback systems. If you've added a suppressor to your AR or run a larger caliber like .458 SOCOM, .450 Bushmaster, or .50 Beowulf, you know the extra back pressure can pound your shoulder and beat up reliability. This buffer tackles that problem with enhanced damping designed to absorb the punishment of hard-cycling, pressurized systems.
The RB5000HP drops straight into your existing carbine buffer tube setup—no gunsmithing required. It works with any standard buffer spring and is fully compatible with mil-spec internal dimensions (7" depth). The hydraulic design does the heavy lifting: it reduces felt recoil by roughly 30% and helps your rifle run more reliably under demanding conditions. Whether you're running a can or pushing heavy rounds downrange, this buffer keeps the bolt from slamming back into the receiver with the force of a sledgehammer.
Worth noting: while the standard RB5000 handles suppressed guns and large calibers fine, the HP variant is optimized for rifles that are genuinely over-gassed and need that extra damping muscle. One caveat—don't use this in a PCC (pistol caliber carbine). This is purpose-built for centerfire rifle systems that are working harder than they should be.
| Brand | Kynshot |
| Model | RB5000HP |
| Buffer Tube Compatibility | Mil-spec carbine (7" internal depth) |
| System Type | Hydraulic recoil buffer |
| Designed For | Over-gassed AR-15, suppressed AR-15, CMMG radial delayed blowback, large-bore calibers |
| Recoil Reduction | Approximately 30% |
| Not Recommended For | Pistol caliber carbines (PCC) |
Yes. The RB5000HP is specifically designed to handle the added back pressure created by a suppressor. Its enhanced damping is built for this application.
Yes. The RB5000HP is engineered to handle large-bore calibers and their higher pressures. The standard RB5000 will also work with these calibers, but the HP version provides more damping if your rifle is running over-gassed.
Yes. The RB5000HP fits any mil-spec carbine buffer tube and works with any standard buffer spring. No tools or modifications needed.
No. Kynshot does not recommend using this buffer in PCC platforms.
SKU: 152828574 • Width: 4.8in • Height: 1.3in • Depth: 7.7in • Weight: 0.385oz
Availability: In Stock
Current Stock: Out of stock
The Kynshot RB5000HP is a hydraulic recoil buffer engineered specifically for over-gassed AR-15 rifles and CMMG radial delayed blowback systems. If you've added a suppressor to your AR or run a larger caliber like .458 SOCOM, .450 Bushmaster, or .50 Beowulf, you know the extra back pressure can pound your shoulder and beat up reliability. This buffer tackles that problem with enhanced damping designed to absorb the punishment of hard-cycling, pressurized systems.
The RB5000HP drops straight into your existing carbine buffer tube setup—no gunsmithing required. It works with any standard buffer spring and is fully compatible with mil-spec internal dimensions (7" depth). The hydraulic design does the heavy lifting: it reduces felt recoil by roughly 30% and helps your rifle run more reliably under demanding conditions. Whether you're running a can or pushing heavy rounds downrange, this buffer keeps the bolt from slamming back into the receiver with the force of a sledgehammer.
Worth noting: while the standard RB5000 handles suppressed guns and large calibers fine, the HP variant is optimized for rifles that are genuinely over-gassed and need that extra damping muscle. One caveat—don't use this in a PCC (pistol caliber carbine). This is purpose-built for centerfire rifle systems that are working harder than they should be.
| Brand | Kynshot |
| Model | RB5000HP |
| Buffer Tube Compatibility | Mil-spec carbine (7" internal depth) |
| System Type | Hydraulic recoil buffer |
| Designed For | Over-gassed AR-15, suppressed AR-15, CMMG radial delayed blowback, large-bore calibers |
| Recoil Reduction | Approximately 30% |
| Not Recommended For | Pistol caliber carbines (PCC) |
Yes. The RB5000HP is specifically designed to handle the added back pressure created by a suppressor. Its enhanced damping is built for this application.
Yes. The RB5000HP is engineered to handle large-bore calibers and their higher pressures. The standard RB5000 will also work with these calibers, but the HP version provides more damping if your rifle is running over-gassed.
Yes. The RB5000HP fits any mil-spec carbine buffer tube and works with any standard buffer spring. No tools or modifications needed.
No. Kynshot does not recommend using this buffer in PCC platforms.
SKU: 152828574 • Width: 4.8in • Height: 1.3in • Depth: 7.7in • Weight: 0.385oz