Barrel Mount 1'' Ring Scope Picatinny Rail Adapter Compatible with 12GA Shot Gun

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Tactical Barrel Mount Rail Adaptor For 12 Gauge Shotgun Magazine Tubes or 1"(25MM) Scope Tube.
This is the easy way to mount tactical accessories on your shotgun
Fits many different 12 gauge shotguns, magazine tubes and long 1" scope tubes
Accepts all standard Weaver / Picatinny 1913 accessories
Black anodized aircraft grade aluminum
2 adjustable accessory rail 1.75" / 2.25"