The weapons included are permanently free on the marketplace. You can find them here https://www.unrealengine.com/marketplace/en-US/product/fps-weapon-bundle
Custom for loops original post https://www.reddit.com/r/unrealengine/comments/6ljsw4/so_i_got_tired_of_ue4s_restrictive_for_loops_and/?utm_source=share&utm_medium=web2x