FPSRussia isn't really that bad. I would he would drop the fake Russain accent, but he shows off a lot of the crazier things you won't find anywhere else, and he does it safely and responsibly.
Hickock45 is probably the best representative for the YouTube gun channels there is. His videos are excellent and he's a big advocate for second amendment rights, usually showing up at the various rallies and such in his state to help the cause.
"Si vis pacem, para bellum" - If you want peace, prepare for war.