Should not be, but it happens here. Usually the pistol is partially concealed, flashed just enough so everyone knows it's there, accidentally, of course, or so the gun carrier hopes they believe. For the carrier it is another subterfuge, an attention grabbing device aimed at feeding an ego desperate for attention. The result of this artfully but carefully exposed gun is supposed to make others think they have discovered he is a genuine tough guy; a formidable man who lives on an edge more exciting and interesting than the actual ordinariness of his life.
This urge for recognition and differentiation is typical of many alcoholics. Most of those in recovery, however are well enough with sound enough egos to keep these urges in check. We also know that the ultimate aim in recovery is to happily become one among many, resting firmly on anonymity, the spiritual foundation, and all it's spiritually sound implications.