Features and Benefits of the Blackhawk Knoxx Gen 3 Remington 870 Stock With improved ergonomics and six convenient adjustment positions, any-size shooter can use the SpecOps Stock Gen III comfortably in any application and with any load. Utilizing dual recoil-compensation systems, this rugged synthetic stock improves shooter confidence, reduces muzzle flip, decreases cheek-slap and virtually eliminates harsh recoil. The BLACKHAWK!® Knoxx® SpecOps Gen III™ Stock with Recoil Suppression Technology effectively reduces felt recoil by up to 80%, taking the original SpecOps Stock to an even higher level of effectiveness, performance and reliability. Binoculars, Monoculars & Spotting Scopesīlackhawk Knoxx Stock GEN 3 - Remington 870 12-Gauge.