[yarddog]

There has to be a .22LR, either an automatic rifle or an automatic pistol or a nice revolver, both with a 6 inch barrel.

An automatic or pump or short double barreled shotgun.

A high quality high powered rifle, either auto or bolt.

[Neidermeyer]

There has to be a .22LR, either an automatic rifle or an automatic pistol or a nice revolver, both with a 6 inch barrel.
***********
Subsonic .22lr ammo makes them especially valuable.