The ZiP is a modular .22 from the guys over at USFA. The blocky design would have you think that it is not comfortable in your hand but when held properly it’s not bad at all. One of the unique features of this .22 is the rail system. The one pictured is just your standard fixed site rail but there are 3 other rails available that can be attached to the ZiP. Each rail having a specific purpose. The ZIPSBR rail allows you to attach the ZiP to a shotgun or rifle giving you a secondary gun. Check out the attached video to see some of the different configurations.