I agree with you here. I find this line of thinking very frustrating. And you're right, it is their approach. Not since Newt Gingrich in 1994 have we seen politicians willing to take a risk. He did and he was stabbed in the back by the GOP and the losertarians.
He was indeed stabbed in the back by the GOP. But since libertarians are not Republicans (and as you yourself pointed out have no power in govt) I do not see how they could have stabbed him, or that he would even notice anyway.
I gather then you agree the GOP will do nothing for gun owners, even if the GOP wins. So, I should support them...why?
And don't forget the media. In 1994 the media still had a grip as the information gatekeepers and they skewered Gingrich.
The media is whom I see as the biggest "enemy", the Libertarians, IMHO, are impatient, misguided, and naive blowhards who really don't do that much damage except in close races where they help elect the democrat.