Beretta RDO mount for tactical shotguns, Leupold pattern.
Please follow the following instructions for proper installation:
• Remove existing picatinny rail, retain mounting screws
• Clean and degrease threaded holes
• Clean and degrease mounting screws
• Align RDO plate on top of receiver
• Apply thread locking compound to mounting screws (VC3 or or Loctite 242) and torque in to 15in#s
• Apply witness mark to screw heads with a paint pen or marker for later reference
• Mount optic with provided screw with threadlock patch to 12in#
• Witness mark optic retention screw to track tightness while firing