So in the comics Bloodsport essentially has Hammerspace that he can grab any weapon out from. Having the film version be nano machines was a nice adaptation
My favorite part of this is for how cool it is and how it took out Starros main offensive move it did absolute jack to him. Like might as well be shooting beebees
Gotta say I hated this is how they did his character. It looks goofy and it seems like the movie really wants it to be taken seriously but a brightly colored spinning light shooter just does not scream "assassin" to me.
To be honest, I don't like the assembling sequence like this. He put tiny piece of box, but it transform into way bigger parts of gun. My mind says it would be soooo light and fragile like plastic foam weapon. Iron man's nano suit feels same to me.