I never have nor ever will use a heat gun. I just field strip it down and lay it in the sun for a few minutes.
I use Militec-1 and a heat gun for the first application, then I use it sparingly like a CLP. Militec-1 is a dry impregnated lubricant, doesn't attract dust or dirt.
MILITEC-1 treated weapons have been tested and proven to be more accurate, deliver higher muzzle velocity with the same load, and show decreased wear at all critical wear points. Also, the weapons subjectively "feel" better in blind tests.
MILITEC-1 has a very low evaporation rate and will not dry out and "disappear" like MilSpec CLP. Firearms remain properly lubricated for a much longer period of time. In fact, MILITEC-1-treated firearms can even be taken out of extended storage and fired immediately with no additional care. It seems to be an unfortunate but unavoidable fact of life that the proper care of weapons is sometimes ignored. MILITEC-1’s long-term lubricating potential helps guard against this eventuality and will allow even badly neglected weapons to fire without jamming. After proper application with MILITEC-1 insures that a weapon will fire properly first time, every time.
MILITEC-1 makes firearms much easier to clean. Since MILITEC-1 seals metal surfaces, fouling and other residue do not build up as quickly. In most cases, a weapon can simply be wiped clean with little effort. This saves a lot of time and frustration and makes cleaning almost fun.
MILITEC-1 is ideal for firearms that are exposed to harsh weather conditions. After proper application, a light coat of MILITEC-1 is highly corrosion resistant - approximately three times more effective in preventing rust than MilSpec CLP. This will cut down on damage caused by damp weather, and makes MILITEC-1 especially useful for firearms carried on motorcycles, bicycles or boats.
A MILITEC-1-treated firearm can be wiped completely clean and dry and will still retain adequate lubrication. That’s right - no liquid lubricant, but still completely lubricated. This is because MILITEC-1 is in the metal, not just on the surface, so the liquid component is unnecessary. This unique self-lubricating effect was used to great advantage in Desert Storm, Afghanistan, Kuwait and Iraq. Clean, dry MILITEC-1-treated weapons continued to fire even in blowing dust and sand, since there was no liquid for the dust particles to adhere to and gum up the works. This same effect is useful in extremely cold conditions where there is no liquid to congeal and slow down or freeze the action.