1. The 12-Gauge Shotgun Barrel Clamp for 12-Guage helps to add strength and rigidity to your tubs. Keeps the barrel tube stable during firing. 
2. The Shotgun Barrel Clamp come with two Detachable picatinny rails on both sides, the flashlight can be installed on the left or right, illuminates the front sight.
3. The two mounting screws provide a more secure hold than clamps that use just one screw.
4. CNC machined from tough but lightweight 6061-T6 billet aluminum.
5. Light weight(47.5g/1.67oz), does not add noticeable weight very.
6. Finish(Rail): Type III hard coat anodized, non-reflective matte black per Mil-Spec.
   

Compatible with:

• 12-Gauge models only
• Stevens 320,
• Beretta 1301 (Comp, Comp pro),
• Stoeger M3000 Freedom,
• Remington 870, 1100, 1187,
• Benelli M2/M4
• Benelli M1 tactical(except SuperNova),
• Mossberg 500, 590, 930 SPX, maverick 88,
• Winchester 1300, 1200 and SxP Defender,
• Possibly other 12-Gauge shotguns not officially tested by SI.

NOT Compatible with:

• With some special version models even mentioned above.
• Mossberg 500, 930.