Unexpected errors

Hi guys im getting some unexpected errors in my weapon manager script that i dont nearly understand.Heres my script and errors.

Errors
Assets/Scripts/Weapon/WeaponManager.cs(31,33): error CS0127: WeaponManager.FindWeapon(string)': A return keyword must not be followed by any expression when method returns void Assets/Scripts/Weapon/WeaponManager.cs(31,33): error CS0029: Cannot implicitly convert type Gun’ to void' Assets/Scripts/Weapon/WeaponManager.cs(33,17): error CS0127: WeaponManager.FindWeapon(string)‘: A return keyword must not be followed by any expression when method returns void
Assets/Scripts/Weapon/WeaponManager.cs(33,17): error CS0037: Cannot convert null to `void’ because it is a value type

Script:

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class WeaponManager : MonoBehaviour {
	public List<Gun> Weapons = new List<Gun>();
	public List<string> WeaponNames = new List<string>();
	public int CurWeapon;
	public static WeaponManager Instance;
	// Use this for initialization
	void Start () {
		Instance = this;
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}

	void OnGUI()
	{
		CurWeapon = GUILayout.SelectionGrid (CurWeapon, WeaponNames.ToArray(), 4);
	}

	public static void FindWeapon(string Name)
	{
		foreach (Gun Gu in Instance.Weapons) 
		{
			if(Name == Gu.Name)
				return Gu;
		}
		return null;
	}
}

Please help.Thanks

So people have been keen to point out the problem. But no one has written you a solution. Try changing the return type to gun, as in the following.

public static Gun FindWeapon(string Name)
{
    foreach (Gun Gu in Instance.Weapons) 
    {
       if(Name == Gu.Name)
            return Gu;
    }
    return null;
}

public static void FindWeapon(string Name)
{
foreach (Gun Gu in Instance.Weapons)
{
if(Name == Gu.Name)
return Gu;
}
return null;
}

This functions return type is specified as void. You cant use return statements of a different type in a function with no return type.

The Error clearly describes what the problem is. Please follow some tutorials on basic programming concepts and it will become clear to you where you have gone wrong and how to avoid it in the future.

EDIT
As i read your whole function you also return a Gun type in a certain condition. In that case you might want to change your return type to Gun instead of void at your function declaration. void return type is used to not give back anything. And null is something. It is a value type.

From a void return type function you can return anytime of course with a simple return keyword