it depends if u want 2 c the enemy with a crossbow in his hands to, or not.
if u dont want, then ull have 2 first take another version of trooper edition (just start up another time ur setup) to be sure u can still delete 1 of the 2 versions after this ends completly different then expected.
then copy the folder of the xbow from the hudguns folder of assasin edition and overwrite it into the hudguns folder of trooper edition. after that, u should go into the mr.fixit folder, then hudguns again, and overwrite that riflefolder to.
just do the same thing u did at mr.fixit folder, but now on the snoutx10k folder.

if u want the enemy gots xbows to, then take the rifle folder in the vwepfolder from assasin edition, and overwrite it into the vwepfolder of trooper edition.

ill hope it work 4 u then, gl, im not sure it does (even tough i tried the same thing once, and it works 4 me :P).