procurement of item cat sec and part no niv, item - 12 bore pump action shot gun , niv, 12 pump action shot gun , niv, 12 bore pump action shot gun , warranty , advance and control sample evaluation , transportation & insurance , inspection / proof charges including proof stock components , profit , gauges set , rfg-23837/5-g plug gauge for barrel of 12 bore pump action gun. , rfg-23837/6-g plug gauge for barrel of 12 bore pump action gun. , rfg-23842/1-g chs gauge for general assy of 12 bore modified pump action gun. , rfg-23843-g chs gauge for general assy of 12 bore modified pump action gun. , cost of mrls , cost of met