THE SMART TRICK OF M30 PISTOL THAT NO ONE IS DISCUSSING

In this mode, the front induce fires the rifle barrel while the rear induce fires the still left shotgun barrel, and that is choked for Brenneke slugs. Sliding the selector back retracts the rear sight and helps make the front result in fireplace the correct shotgun barrel, which happens to be choked for birdshot. This setup is typical for Drilling