Choate Tool Remington Base Clamp 1in Matte Finish. Gives you an attachment point for a sling on the front of you shotgun and adds support to magazine extensions. Fits most Remington Mossberg Benelli and Winchester shotguns. This part is Sandblasted Matte finish. Specifications for Choate Tool 12 Ga. Magazine Extension Sling Swivel Base Clamp 1in Matte Finish: Manufacturer: Choate Tool Country of Origin: USA Features of Choate Tool 12 Ga. Magazine Extension Sling Swivel Base Clamp 1in Matte Finish Magazine Extension Sling Swivel Base Clamp 1 Package Contents: Choate Tool 12 Ga. Magazine Extension Sling Swivel Base Clamp 1in Matte Finish Choate Tool CMT-55-08-02: Remington Base Clamp 1in Matte Finish