It should help. Just a few pointers I've learned from using alumahyde. Put the (metal) parts in the oven at about 150-200 degrees for an hour or two before you de-grease them with whatever solvent you're thinking about using. There's always a little bit of oil somewhere on the gun that will leach out from baking that you'd otherwise be unable to get at (had to do a rifle twice to learn this lesson!).
Use gloves when handeling before and while applying the finish. The oil from your fingerprints will cause the alumahyde not to cure properly to the finish.
Lastly--once you've applied the final coat; don't touch the parts for a week at least. It really helps the finish harden and you'll be thankful you did after because the stuff it very durable once it's cured.