[Windows]

I primarily use 3 different lubricants depending on the function of the parts.
For high force parts such as hammers, sears, and other relatively slow moving pieces, I use a aviation grade medium-weight grease such as aeroshell 22. It lasts much longer on tough to reach parts and plays well with ABS.

For faster metal on metal or metal on plastic such as bolts or slides, I have been using Frog lube (paste) with excellent results. It provides excellent wetting properties, thermal stability, water repellancy, and is non toxic and safe to use on all plastics. The paste version is also exceptionally easy to apply with a screwdriver for those hard to reach areas.

Lastly, for fast moving o-rings such as the piston o-ring, I use a very light weight o-ring grease such as the molybdenum grease mentioned above. It is absolutely essential that this grease is top quality as I only use a tiny film on the cylinder walls to prevent grease ending up in the shuttle valve, hop up, or barrel, and this tiny amount needs to survive thousands of shots and exposure to propane without drying out.

As a side note, I don't use silicone in any of my mags or propane as I find it gets everywhere, messes with the hop up producing inconsistent shots, disolves other lubricants, causes buildup of said lubricants in the barrel, attracts dust and dirt, and suffers from dry out after exposure to propane. For keeping the o-rings in the valves of the magazine maintained, I disassemble them and use automotive seal swell, and then clean off the excess.