That's true, I like Sam and his Winchester.
They have an MP5 PDW in one episode. I don't know where Fiona got that civy copy of the B.A.R. in one episode, but that can't have been cheap. Also, one time they are given a pair of G36-C rifles, and they use
both of them to incriminate some bad guys.
The one time they were being smart was when Fiona bought a pair of Browning Hi-Powers for 200 bucks each. But the cops chased them and they had to abandon the car and the guns.