Weapons Instantiation

using WhateverYouWantButPreferablyTheUnityStuff

...

// a set of all available weapons that you can borrow from a static class or something
private GameObject weaponList = someClassToStoreAListOfWeapons.weapons;

// number of weapons you wanna have
public int wCount = 5;

void Start() { // or whatever function the devs normally call before match starts
    Stack weaponStack = new Stack();
    for (int i = 0; i < wCount; i+=1) {
        weaponStack.push(weaponList[Random.Range(0, weaponList.length - 1)]);
    }
}

...