This upper comes equipped with adjustable sights, and its push-button takedown allows for quick and effortless swaps—easier than switching between open sights and an optic. It’s the ideal backup barrel for those who put plenty of .22 LR rounds downrange or a great replacement for a worn-out barrel.
Note: These are stripped receivers so they will not come with any internal components. MK IV uppers are compatible with all MK IV pistol frames. They are not compatible with MKIII pistol frames.
Being a serialized item, an FFL is required.
