I used a silencer with it once I finished my OHK's to get bloodthristy and realized I should have had it silenced the whole time. Silencer on the 1216 is great. The gun still blows, but that silencer made the bloodthirsty challenge easy. Took me 7 games to get the 10 needed bloodthirsty medals.
The M1216 is fun as hell and for whatever reason feels a lot better than the Saiga Genesis 12. I'm disappointed I never get to spend much time with it since you prestige so quickly in this game.
I think it's a neat idea for a shotgun. You've got competent hipfire with the Laser but can ADS to narrow the spread for longer shots, the choice of the Long Barrel vs. a Suppressor that doesn't gimp the gun, the whole dynamic of managing shots before the cycle vs. reloading, etc. IMO a lot more interesting than the AA-12, which was pretty much just slap on ExMags and hipfire away.
"An Incandescent Revelation in a World of Darkened Forms" The bird of Hermes is my name, eating my wings to make me tame