The KRISS Vector CRB line of carbine rifles utilize the innovative Super-V recoil system to deliver reliable low-recoil performance. The Vector is chambered in .40 S&W, .45 ACP. 9mm & 10mm pistol calibers and comes in a number of colors. These rifles boast options like barrel shrouds, handguards, flip up sights, adjustable stocks, threaded barrels, rails and more. Experience the Vector's performance which is regarded as one of the best shooting platforms for home defense; the low muzzle jump & recoil, along with easy caliber interchangeability, gives you a stable shooting platform great for any situation.