I learned a trick many years ago from the owner of Cylinder & Slide Custom Guns, about using a high quality gun grease on semi-autos.

The reason is the oils may run out of the proper places in the pistol, but the grease will stay right on the rails where it is needed.

I use Tetra Gun Grease, a very high quality grease.

It only requires a very, very small amount of grease to do the job.

I apply small dot to both rails.

Then spread it with my finger.

The pistol is ready for reassembly.

After reassembling the pistol, work the slide several times to spread the grease on the rails.

There will be a small amount of grease "pushed" out on the back of the slide.

Just wipe it off with a cloth.

A quick spray with WD-40 and a through wipe-down with the cotton cloth, and you are finished.