Primos Hunting TriggerStick Gun Clamp for Apex Tripod Carbon Fiber. This Accessory is NOT Compatible with Any GEN 1 GEN 2 or GEN3 Trigger Stick Models. Specifications for Primos Hunting TriggerStick Gun Clamp for Apex Tripod: Manufacturer: Primos Hunting Color: Black Finish: Black Features of Primos Hunting TriggerStick Gun Clamp for Apex Tripod 1/4in-20 Mounting Hole; Holds rifles from 1.5in to 3.5in Wide; Rubber Insert to keep gun protected; Lever lock for ultra-tight fit; Durable construction; Package Contents: Primos Hunting TriggerStick Gun Clamp for Apex Tripod Primos Hunting 65901: TriggerStick Gun Clamp for Apex Tripod Carbon Fiber