Sorry it took me so long to get back to you on this. I asked him myself personally. Tom McGurk is a supporter of 2nd Amendment Liberties and will fight for them. He's not going to slap any gun control on you.
I don't live in his district so in my case it doesn't matter but he should make sure his web site makes that clear. Incidentally, Unified Sportsmen of Florida says he failed to respond to their questionnaire and gave his opponent Allen Boyd, a PRO-GUN rating. So, to some degree, McGurk's already blown it.
For what it's worth, anybody in that district (R, D or anything else) had either better be obviously Pro-Gun or should save himself the filing fee.