Beretta's CROM (Co-Witness Ready Optic Mount) allows an Aimpoint Micro (H1, T1, H2, T2) to be mounted the 1301 Tactical Shotgun. The CROM attaches directly to the shotgun's receiver, and replaces the factory plastic rail and rear sight. This accessory features an adjustable XS ghost ring, and can be used with the used as an emergency backup sight in the event of an optic failure.