This is a hard call. I never much liked Nugent's music, or even his personality, but he's probably useful as a "flash point" to demonstrate the anger that exists on the Right, not unlike those who publicly (and wildly) protest the hyper-publicized shooting in Florida are being used as tools by the Left.
There probably just needs to be a little more distance between Ted and the official organizations that he represents, such the RP or NRA.
Whatever the reality is, pro-gun advocates should NEVER believe that their spokesman (whoever it may be) will be seen as respectable by the anti-gun forces that oppose them. The anti-gun crowd hated Charleton Heston as much as they hate Ted Nugent. (think Bowling for Columbine.)
If you think Nugent is too extreme, you're probably correct, but you should also probably (re)familiarize yourself with Cass Sunstein to get a reminder of just what we're up against.