i think T(+)rget is working on WTF module, wich can create weapons i belive.
also i found this in csx.inc
Code:
/* Custom Weapon Support */
/* function will return index of new weapon */
native custom_weapon_add( wpnname[],melee = 0,logname[]="" );
/* Function will pass damage done by this custom weapon to stats module and other plugins */
native custom_weapon_dmg( weapon, att, vic, damage, hitplace=0 );
/* Function will pass info about custom weapon shot to stats module */
native custom_weapon_shot( weapon,index ); // weapon id , player id
/* function will return 1 if true */
native xmod_is_melee_wpn(wpnindex);
/* Returns weapon name. */
native xmod_get_wpnname(wpnindex,name[],len);
/* Returns weapon logname. */
native xmod_get_wpnlogname(wpnindex,name[],len);
/* Returns weapons array size */
native xmod_get_maxweapons();