ESFAM has expressed its opinion on the draft Implementing Directive defining technical specifications for the marking of firearms and essential components. This position can be found on the site of the EU Commission
https://ec.europa.eu/info/law/better-regulation/initiatives/ares-2018-5478755/feedback/F15587_en?p_id=319825
The detailed opinion of ESFAM can be found on this site under “New EU Directive on Marking”