KynSHOT debuted their new hydraulic recoil dampers late last year. According to KynSHOT they help reduce recoil, bolt carrier speed, wear/tear on parts, shock and vibration to your optics, improve reliability and suppress bolt bounce. The drop-in buffer features a hydraulically dampened piston that absorbs the shock from the bolt carrier. The KynSHOT is made out of 17-4 stainless steel and weights in at 4.2 ounces. It’s available for fixed stock and collapsible AR-15s, .308 ARs with fixed and collapsible stocks as well as various shotgun platforms. It can be used in rifles chambered in .223/5.56, 7.62×39, 6.8 SPC, .300 BLK, 6.5 Grendel, .458 SOCOM, 450 Bushmaster, and .308/7.62. The KynSHOT also comes with a 10 year or one million round warranty. They start at around $110, check them out at Kynshot.com.