/**
     * returns the action that specifies what animation to play when the items is being used
     */
    @Override
    public EnumAction getItemUseAction(final ItemStack stack)
    {
        return EnumAction.BOW;
    }

    /**
     * Called when the equipped item is right clicked.
     */
    @Override
    public ActionResult<ItemStack> onItemRightClick(final World worldIn, final EntityPlayer playerIn, final EnumHand handIn)
    {
        final ItemStack itemstack = playerIn.getHeldItem(handIn);
        final boolean flag = !this.findAmmo(playerIn).isEmpty();

        if (!playerIn.capabilities.isCreativeMode && !flag)
        {
            return flag ? new ActionResult<>(EnumActionResult.PASS, itemstack) : new ActionResult<>(EnumActionResult.FAIL, itemstack);
        }
        else
        {
            playerIn.setActiveHand(handIn);
            return new ActionResult<>(EnumActionResult.SUCCESS, itemstack);
        }

    }

Alright so I got this in my ItemGun class. When I aim it shows just like a bow: http://prntscr.com/lytsr5 anyway to possible like use glstatemanager and rotate/translate it?

bump

I think so. I think maybe you can maybe you can handle the RenderHandEvent or the RenderSpecificHandEvent. You might also want to rotate the original model. 

 

Note that it (in order to be more gun-like) may be more important to control the rotation of the whole hand.