The uses of WD-40 described on this website were provided to WD-40 Company by end-users of the product, and do not constitute recommendations or suggestions for use of WD-40 by WD-40 Company. These uses, including the "Use of the Day," have not been tested by WD-40 Company. Consumers should exercise common sense whenever using WD-40. Always follow the instructions and take heed of any warnings printed on the WD-40 packaging
<http://www.snopes.com/inboxer/household/wd-40.asp> Includes the fish oil rumor.
If something is so heavily debated then why risk it?
16 uses found.
Cleans and protects gun carriages
Cleans and protects gun linkages
Keeps trigger on glue gun from sticking
Lubricates gun strap hardware
Lubricates gun table rollers
Lubricates paintball gun barrel
Lubricates precision gun fittings
Lubricates rivet gun mechanisms
Protects gun parts when being stored
Helps break in leather gun holsters
Lubricates auto cocker on paintball gun
Lubricates bulk loading caulking gun
Anti-rust agent and lubricant for gun magazines
Protects bore and exterior of gun barrel from corrosion
Removes powder residue and metal fouling from gun barrels
Stops squeaks on add-ons to police gun belt
Well, in fairness - you have no idea how many older firearms I've bought or handled that were insanely gunked up with an orangish residue that was attributed to the use of WD40 as an OIL. Folks would just spray it on and let it dry, and if you do that long enough you'll reputedly cause quite a mess.I'm amazed at all the negativity and seemingly angry responses to this thread!
So since the OP asked about cleaning guns with it, I feel obligated to point out that the manufacturer says it " Protects bore and exterior of gun barrel from corrosion. Removes powder residue and metal fouling from gun barrels."