[MadMax]

Blaugh. This leads to drippy GBBs which adhere to dust, sand, and pocket lint to form what I call gun smegma.

The only application of silicone oil should be in the gas you charge with. 2 drops mixed in your mag gas every 8-10 mag fills is sufficient. Silicone oil is actually a poor lubricant in general. It spreads continuously. A drop of oil will spread to a molecular layer because it has no surface tension. Because of this it offers no film protection and will seep over places not needing lubrication. The only thing silicone oil is good at is being chemically inert. It attacks nearly no plastics or rubbers althoug it can absorb into some elastomers and make them swell. Silicone oil is useful to keep elastomer parts from drying and cracking, but provides little useful lubrication to other parts because it doesn't stay in place.

Direct application of silicone oil invites overlubrication.

The best gun lube that I have found is teflon grease SuperLube. A very light application in slide rails provides slick recoil. Apply a light wiping of grease and remove it with a wad of paper towel. Very thin grease films can provide decently lasting lubrication. Visiblly thick applications of grease glom onto dirt and sand which can accelerate wear.

Trigger sear components should not be lubricated. Abrasive lube smegma can cause accelerated wear in high pressure contact areas like trigger components. Keep them clean and dry so sand doesn't adhere to them.

There are very few problems in GBBs that can be "repaired" with lubrication. Minor leaks and very frictiony sliding elastomer components are about the only things that can be fixed with lube.