This Universal Shotgun aluminum 5 Position-Rail Barrel Mount, has 3 rails with 3 Picatinny slots on each rail and solid aluminum construction with a matte black finish.
It features a smart, one-piece design for clamping shotgun barrels.
Weight: 1.3 oz
Length:1.375"
Width:1.5"
Height:1.5"
Screw Size: M4 × 0.7 mm, 20mm Long,
Alloy Steel Socket Head
Note: 2 inches of free space on the magazine tube is required to connect this mount.