Nice Mark!Published by Marc Steele on December 1, 2022December 1, 2022 Product identification as required by the ATF. Meets and exceeds marking depth, and can be seen through coating. Process time under 2 seconds. Make Columbia Marking Tools your source for all your ATF required firearms marking machines. firearms@columbiamt.com Categories: FirearmRoll Mark ExamplesRoll Marking Tags: Firearm MarkingRoll Marking Marc Steele Marc has been in the marking business for over 15 years. He provides technical assistance through emails and online chat.