285.00 Mossberg 200K A Pump Action 12 Gauge Vintage Oshawa / Durham Region Apr 27, 2024 - 7:44 PM 3screwsloose NO TRADES. Mossberg 200KA pump action shotgun with removable magazine. Sort of a modified bolt action system to function as a pump action back in the day when cigarettes were full of vitamin K and engineers hit their heads.