ATI VK22 Varmint Killer 22 LR 16" 28rd. The VK-22 has a multicaliber mil-spec lower receiver paired with a Chiappa Firearms .22LR dedicated upper receiver. The Chiappa upper has a picatinny rail, a 16” barrel with six grooves and a 1x16 rate of twist. It has a collapsible stock and includes one 28 round magazine. Also, the lower used for the VK-22 will receive any manufactured mil-spec 556 upper, just in case the shooter should desire some variety.The VK-22 is suitable for all types of varmint hunting, plinking or hobby shooting.