Originally Posted By D_Man:
Yes.  The serial number is the only engraving with extra scrutiny, and the law for it jsut says it needs to be not-readily defaced, and assuming it's a commercial pistol that already has it's SN.  All other required markings just need to be on the frame/receiver and the minimum depth.

You'll notice most manufactured polymer pistols have the name and location of the original manufacturer embossed or molded into the plastic.