Aurora_2020 i believe the way the game loads in assets means it's nigh impossible to add the AN94 to a map it's not already in
it's possible you could attempt to replicate the AN94, i believe, in a way similar to how some modded servers add perk machines to maps they technically dont exist in, which is done by simply recolouring a pre-existing perk machine and using a custom script to give the perk's effect when bought... but i wouldn't know how to do it