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The KynSHOT RB5001 is built for AR-15 rifles that rock a fixed stock configuration, and it delivers a noticeably smoother shooting experience right out of the box. The hydraulic system absorbs recoil energy as your bolt carrier cycles rearward, which prevents bolt bounce during chambering and cuts down on the impact your rifle's internal components take with every shot. This isn't complicated plumbing either—it drops in exactly like your old buffer and works with any standard rifle buffer spring you've already got.
Inside the RB5001 is a patented hydraulic system that slows and cushions the bolt carrier's movement instead of letting it slam to the rear like a standard buffer would. The result is less felt recoil (roughly 20-30% reduction) and significantly less muzzle flip. For precision shooting or competition, that matters because you stay locked on target between shots instead of wrestling with the gun's movement. Real shooters report they can keep their scope picture steady enough to see where their rounds land without breaking aim.
Constructed from high-strength 17-4 stainless steel and filled with Mil-Spec hydraulic fluid, this buffer handles temperature swings from -30F to +150F without breaking a sweat. The stainless steel construction makes it virtually impervious to corrosion, so whether you're running suppressed or unsuppressed, in wet conditions or dry, this thing just keeps working. Your rifle's internals also take less punishment because the recoil impulse is smoothed out, which translates to longer service life overall.
The RB5001 is engineered specifically for Mil-Spec rifle-length fixed stock buffer tubes with a 9.5-inch internal depth, which covers standard A1 and A2 stocks. It pairs with any standard rifle buffer spring, making installation a five-minute job. This buffer is optimized for 5.56/.223 but also runs reliably in other popular AR-15 calibers like 300 Blackout, 6.8 SPC, 6.5 Grendel, and even heavier rounds like 450 Bushmaster and 458 SOCOM, where the extra mass and damping really shine.
Yes, as long as your rifle has a Mil-Spec rifle-length fixed stock with a 9.5-inch internal depth buffer tube (standard A1 or A2 stocks). The RB5001 is a direct drop-in replacement that pairs with any standard rifle buffer spring. If you're unsure about your buffer tube length, measure from the inside of your buffer tube opening to the inside back end.
The hydraulic damping system typically reduces felt recoil by 20-30%, though users often report even more noticeable improvement in actual shooting, especially with muzzle flip reduction. The real benefit shows up in faster target reacquisition and your ability to stay on target between shots without your scope picture shifting significantly.
Yes. While optimized for 5.56/.223, the RB5001 also works well with other popular AR-15 calibers like 300 Blackout, 6.8 SPC, 6.5 Grendel, and .204. It's even compatible with heavier magnum cartridges like 450 Bushmaster and 458 SOCOM, where the weight and damping characteristics work especially well. Just verify your specific setup works with a rifle-length buffer tube.
Installation is simple and requires no special tools. Depress the spring-loaded plunger holding your old buffer in the tube, remove it (be careful, it's under spring tension), and drop the RB5001 in. It works with your existing buffer spring. The whole process takes about five minutes and no gunsmithing experience is needed.
| UPC | 854476005010 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RB5001 |
| Color | HYDRAULIC RECOIL BUFFER |
| Length | 7.9000 |
| Model | |
| Product Type | Buffer |
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