One special note for SIG PXXX series handguns is the use of grease on the rails. The slide is made of steel and the frame is aluminum, so excessive wear is possible. I use a product called Brian Enos Slid-Glide designed for this specific purpose. Just use enough to coat the rails and guides and be sure to remove any excess.
A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman