give @s crossbow[custom_name='{"translate":"darknet.nailgun","italic":false}',unbreakable={},custom_model_data=1000,custom_data={nailgun:1},charged_projectiles=[{id:"minecraft:arrow",count:1,components:{"minecraft:custom_name":'{"translate":"gun.nail","italic":false}'}}]] 1
item replace entity @s weapon.offhand with air