In this episode of American Airgunner, a gunsmith cautions us against using petroleum based oils in our spring rifles, then we see how a polymer Walther air pistol gets a hydrographic camo treatment. We get an overview of pre-charged pneumatic guns and the remaining Airgunner Challenge contestants shoot a Ruger Air Hawk at pressurized cans in an effort to avoid the next elimination round. Some great slow motion clips in this one.