How to Mount a Flashlight on a Shotgun Barrel

Quick Answer

Use a Picatinny barrel mount like the BR005 to attach a flashlight, laser, or red dot to your shotgun barrel. The mount clamps around the barrel and provides a standard rail for accessories.

Step-by-Step Installation

1. Step 1: Measure Your Barrel Diameter: Use a caliper or measuring tape to check the outer diameter of your shotgun barrel. The BR005 mount fits diameters between 0.66 and 1 inch. If your barrel is outside this range, the mount will not secure properly. Common mistake: assuming all shotguns use the same barrel diameter. Always measure first.
2. Step 2: Position the Mount on the Barrel: Slide the mount onto the barrel at your desired location. For most shotguns, placing it near the forend provides good balance and access to the flashlight switch. Ensure the Picatinny rail faces upward or to the side depending on your accessory. Checkpoint: Make sure the rail is oriented so your flashlight or sight sits level.
3. Step 3: Tighten the Mount Using the Hex Wrench: Use the included hex wrench to tighten the screws evenly. Do not overtighten, as this could damage the barrel or the mount. The mount should be snug enough that it does not rotate under recoil, but not so tight that it deforms the barrel. Common mistake: overtightening can dent a thin shotgun barrel. Tighten until firm, then stop.
4. Step 4: Attach Your Flashlight or Accessory: Mount your flashlight, laser, or red dot onto the Picatinny rail using the accessory's own mounting hardware. Slide it onto the rail and tighten the locking screws or lever. Verify the accessory is secure and aligned with your sight line. Checkpoint: Test the accessory by gently pulling on it. If it shifts, tighten the rail clamp further.
5. Step 5: Test Function and Zero: Cycle the action to ensure the mount does not interfere with the shotgun's operation. Fire a few rounds to confirm the mount stays tight. If using a laser or red dot, re-zero after installation, as the mount may shift slightly under recoil. Common mistake: skipping the re-zero step can cause accuracy issues.

Product Facts

• BR005 Barrel Mount with Picatinny Rail for Laser Flashlight 20GA Shotgun: Fits barrel diameters from 0.66 to 1 inch and is designed for 20 gauge shotguns. You must measure your barrel to confirm compatibility; the mount will not work on 12 gauge or AR-15 barrels.