Thanks to me that i bought one in .22 last month and u really dont need to tune it at all ,very accurate ,this is certainly a great shooter ,the cocking is not as hard ,its a hard hitter or i got lucky .it comes with mounts and scope 3-9x50 which xisco scopes are very decent i like them very much compare to some leapers i have used ,its not loud either just a thump .These b40,s are excellent and if u are plaining on one of them u will not be disapointed ,please take my word for it ,i have the 22 version and it keeps up with my cometa as far as accuratcy,and fps also penetration .Mike will make sure u get a good rifle just ask for inspection cause hes the one that does it and if u ever have a problem he would help u with no problem ....God Bless Us All...jorge lopez