Want to get a survival rifle

[Santos]

the m6 is like a single shot rifle

The carbine variant is not available here in australia cause of the folding stock 

But i have decided to get the M6 rifle with its 18" barrel and shorten it so i can add a removable choke  (and maybe look at rifling the first 3 inches)

[robertrogers]

The Ruger 10/22's are good choices too.  There are many mods to be had too, a very tried and true rifle.