Hello! 


Thanks for purchasing our product
to get the modelled item in vanilla game

/give @p bow{CustomModelData:10101}

the CustomModelData will always start with 10101
and the end is when you receive the item with the same model
with the previous number.

Here's the list of items that's possibly has in packs:
diamond_sword // for melee weapons(e.g.Sword,Spear)
bow // for bows
shield // for shields
fishing_rod // for fishing rods
crossbow // for crossbows
paper // for cosmetics(e.g.Hat,Wings)
pickaxe // for pickaxes
axe // for axes
shovel // for shovels
hoe // for hoes

appreciated from EliteCreatures!