Besides (and I now quote the artist's own words) I never put a bullet in my gun, but only pretended, to do so!
Source, in full
Quote of Matthijs Maris, as cited by David Croal Thomson (1907), in: The Brothers Maris (James – Matthew – William), ed. Charles Holme; text: D.C. Thomson; publishers, Offices of 'The Studio', London - Paris, 1907, p. BMxiii
Notes from Wikiquote
In 1870 Matthijs Maris was enrolled in the Municipal Guard of Paris, but avoided there any kind of fight.