Nice Mark!Published by Marc Steele on February 3, 2022February 3, 2022 Topical laser marks burn through the outer coating to provide a high contrast mark. Make Columbia Marking Tools your source for all your ATF required firearms marking machines. firearms@columbiamt.com Categories: FirearmLaser Mark ExamplesLaser Marking Tags: Firearm MarkingLaser Marking Marc Steele Marc has been in the marking business for over 15 years. He provides technical assistance through emails and online chat.