I am thinking of going to the local pawn shop today, around 4 or so and making a stop to see what all they currently have. I plan on solely perusing but if I happened to notice a decent .308, how can i tell if the 'gizzards' of the gun are making it worth the purchase? I just havent bought used before sides my mosin and sks and I don't want to end up buying someone's p.o.s. that they dropped off for $$$.