GrovTec US Snap Hook-Heavy Duty Push Button Adaptor Black. Adds versatility to all slings (push button swivel not included). Specifications for GrovTec US Snap Hook-Heavy Duty Push Button Adaptor: Manufacturer: GrovTec US Color: Black Gun Type: Rifle Gun Model: Universal Package Contents: GrovTec US Snap Hook-Heavy Duty Push Button Adaptor GrovTec US GTSW269: Snap Hook-Heavy Duty Push Button Adaptor Black