Taran Tactical Innovations Benelli M1/M4 Ultimate Charging Handle Black. It is machined from billet stainless steel and coated with Ion Bond (95 Rockwell) in their new Gunmetal Gray finish. It is virtually indestructible. The product weighs 1oz and is designed to work with 12 gauge shotguns. Specifications for Taran Tactical Innovations Benelli M1/M4 Ultimate Charging Handle: Manufacturer: Taran Tactical Innovations Gun Make: Benelli Package Contents: Taran Tactical Innovations Benelli M1/M4 Ultimate Charging Handle Taran Tactical Innovations BNLIM4-CH01: Benelli M1/M4 Ultimate Charging Handle Black