Today’s gunfight pits a couple of brush guns against one another, although one of them has been repurposed as a home-defense rifle. The venerable Marlin 336 has a great record on Gunfight Friday. Introduced in 1948 and still being made today, it is an enduringly popular rifle. In fact this week’s model looks brand new—at least judging by laminated stock. In the other corner we have Remington’s semiauto 7400, a more modern, gas-operated take on the brush gun introduced in 1981.