Or he’s wondering how one attached a silencer to this long-barreled antique piece?Beautiful work. She fits into te scene like she was always there. Lily adds an enigmatic element, making us wonder why the guard is toying with his pistol. Is he in love with her, and knows he can't have her, perhaps because she is a favourite of the Sultan's harem. Is he going to kill her? Or perhaps his obsession with her is making him contemplate assassinating the sultan.
Or, another possibility is that he’s thinking of silencing her. She’s been complaining nonstop all day long. It’s enough to drive any guard to extreme measures!