Toggle style Straight-Pull bolt action; Threaded barrel using the standard 1/2x28 TPI; The Quick-Change barrel system; It allows for seamless transitions between barrel lengths and even calibers - from the nimble .22 LR to the potent .22 WMR; Adaptable magwell coordinates caliber changes with the correct Ruger magazine; Adjustable stock offers tooless customization for length of pull and comb height; Threaded barrel enables use of muzzle devices and suppressors; Featuring a Picatinny Optic Rail for optics mounting; Trigger group compatible with Ruger 10/22 style trigger groups; Single Action trigger; Pushbutton safety, trigger safety; Includes two magazines