Museum Replicas 1907 Bayonet Knife 21.75in. MRP. The Air Force Museum in cooperation with the Smithsonian Air and Space Museum has provided this Air Force bayonet knife with a flawless original brass handle correct colorways and blade finish that is incredibly close to the original. The Air Force Museum Bayonet Knife is an amazing Air Force replica boasting attention to detail that is usually only seen on Military and/or Special Forces gear. This Air Force bayonet knife is an accurate replica of one of the most famous bayonet made the Air Force Bayonet Knife. Specifications for Museum Replicas 1907 Bayonet Knife: Manufacturer: Museum Replicas Blade Length: 17.13 in Overall Length: 21.75 in Blade Material: Steel Serrated: Plain Included Accessories: Scabbard Knife Application: Fixed Blade Blade Finish: Steel Handle Finish: Matte Package Contents: Museum Replicas 1907 Bayonet Knife Museum Replicas MRP600851: 1907 Bayonet Knife 21.75in.