Sako Quad is a bolt-action rifle made by the Finnish firearms manufacturer Sako. Quad is delivered in many configurations, and has a quick change barrel system which lets the user swap barrels using a 5 mm hex key. The bolt lift is 50 degrees. Sako Quad factory barrels are delivered chambered for .17 Mach 2, .22 LR, .17 HMR and .22 WMR. There are two types of magazines, one type for the shorter .17 M2 and .22 LR, and another for .17 HMR and .22 WMR.