The HikMicro Barrel Mount For A7E is avaiable for the following barrel mounts to suit a range of barrel diameters. The HM-ACS-14-18 model features an extended design for use in conjunction with a silencer
14.5 to 18mm (Rifle) Suitable for Rifle with Moderator, 14.5 to 18mm (Shotgun) Suitable for 28 Gauge Shotgun, 18 to 21.5mm Suitable for 20 Gauge Shotgun, 21.5 to 26mm Suitable for 12 Gauge Shotgun