As per Kolar's instructions in the manual: "Spray the trigger assembly with a light gun oil. Let the oil stand on the trigger group for about 15 minutes. Spray it again to wash off the components and shake off the excess lubricant.Excessive use of lubricant can cause serious functioning problems."
I'm using Amsoil gun oil spray lubricant or Rem oil for the above. I'm also using a Q-tip to clean in the hard to reach recesses, before the final spray.
I have found that the trigger group does not get very dirty. I pulled mine out after 2500 rounds, and there wasn't much to clean.
It's still hard to beat Starrett M1. I've been using it on mine for almost 20 years. Spray it full until it drips, shake it over the trash can, let it sit for a few minutes or more and blow off the excess. Then I give it a wipe off with a paper towel and it's good to go. It's a very thin oil that dries a nd leaves a thin film. Used on micrometers etc. for years.
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