Here we have the two crew served “minigun”  GAU-2B weapon stations. Each station comes with nine (9) barrel sets. Three of each depending on the time period you are building for. This ensures an authentic model tailored to your specific build. This set is designed as a standalone set and will offer you the spars to be seen while looking through the crew window. Brass catching bag also in place. 
Again this particular set is best suited to use WITHOUT our internal rib set. Please view our other listing with set specifically designed to integrate with our rib structure.