Save that rem-oil for squeaky door hinges. If you want great lubes for your guns that are cheap, go to Auto Zone and buy 2 things:
1. Generic lightweight motor oil- use this for exterior metal surfaces. Get you a small paint brush, put a little of that oil on it, and paint the metal on the gun.
2. White lithium grease , <$2 a tube. Apply this with a q tip sparingly to the internal working parts, BCG of our AR, etc. Unlike a liquid, it won't evaporate or get slung out of the gun on the first shot. When you go to clean the crud out of your gun after the range, the grease will wipe right out along with most of the crud.
-As for a CLEANING SOLVENT, I prefer Mpro-7 and Hoppes, whichever I can cheaper by the gallon.
- in all seriousness, those spray cans of rem-oil I only use after a day hunting to spray down my gun before I put it in a case, esp. if I know I won't get to actually cleaning it for "a day or 2".