Each Ruger American Rimfire(R) rifle includes two interchangeable stock modules that provide comb height options for scope or iron sight use (excludes wood and laminate stock models). Standard models come with long length of pull modules, while compact models come with short length of pull modules. By simply removing the rear sling swivel stud, stock modules can be changed in seconds. All four stock modules are completely interchangeable across all models. Easy-to-use 10/22(R)-style extended magazine release provides smooth, no-fuss removal of flush-mounted magazine. Patent-pending Power Bedding(R) integral bedding block system positively locates the receiver and free-floats the barrel for outstanding accuracy. Ruger Marksman Adjustable(TM) trigger offers a crisp release with a pull weight that is user adjustable between 3 and 5 pounds, allowing shooters to make that perfect shot. Features a visible, accessible and easy-to-actuate tang safety that provides instant security. Cold hammer-forged barrel results in ultra-precise rifling that provides exceptional accuracy, longevity and easy cleaning. A 3/8″ rimfire scope base is machined into the receiver, which is also drilled and tapped for Weaver(R) #12 bases (not included). A 60 degree bolt provides ample scope clearance and the easy-to-use, receiver-mounted bolt release allows the bolt to be readily removed without requiring a pull of the trigger, a unique safety feature among rimfire, bolt-action rifles. Also includes: Williams(TM) fiber optic front sight and adjustable, V slot, folding-leaf rear sight; sling swivel studs.