With this mode, the entrance cause fires the rifle barrel even though the rear bring about fires the remaining shotgun barrel, that's choked for Brenneke slugs. Sliding the selector again retracts the rear sight and will make the front trigger fire the best shotgun barrel, which is choked for birdshot. https://m30-pistol18428.weblogco.com/31150591/the-single-best-strategy-to-use-for-m30-pistol