Shot effect from weapon

[redditing]

I have a question, I would like to know if it is possible to make a shot effect, it means that when I hold the M4, it shoots and you can see where these bullets are falling and at what speed, and I would like to recall these bullets. If it is not known what is going on, I did the "M1" weapon model and I would like to make this model as a new weapon, and if the player was holding this M1 then it would have to shoot and the bullets would fall out of the weapon. At the beginning I was thinking about the "CreateWeapon" function but it is possible that there is another option because on average I know this function and if there was any other option it would be great