my 2 cents
I'll jump on this drive by thread.
I have been using Gunzilla for the last 8 months. I am very impressed with how well it removes carbon. I use it on my AR 15 bolt/carrier/barrel. I use it on all my handguns. I like it and will continue to use it.
Here's why: It cleans just as well as Hoppe's 9 but has almost no odor. Don't get me wrong, I love the smell of Hoppe's but a little bit of that smell goes a long way.
Gunzilla is advertised as a Cleaner/lube/protectant. There is no product that can do all three things well. None. Gunzilla is a decent solvent but it is a poor lube and a poor protectant. I do clean guns with it and apply more to them before I put them in the safe for storage. I remove the Gunzilla and apply regular oil when I take them out to shoot. In the case of guns that I will be shooting sooner than later I clean with Gunzilla and lube with regular oil.
Your mileage may vary.