Harley Keener's potato gun (Mark I)

"Harley Keener's potato gun" redirects here. For Mark II of Harley Keener's potato gun, see Harley Keener's potato gun (Mark II).

Mark I of Harley Keener's potato gun is a rudimentary pipe-based gun created by Harley Keener. Keener threatened Tony Stark using the gun; Stark, one-upping Keener, smugly noting that Keener's potato gun was only capable of firing one potato, which Keener had just done.

Mark I of Harley Keener's potato gun was succeeded by Mark II, which was created by Stark following Aldrich Killian's War.