Turret Rotate Bug

I am trying to rotate a turret on top of a tank and would like to use the “k” and “;” to spin the turret left and right. So far I’m not able to rotate at all.
Here is the code I’m using so far, please let me know where I am going wrong.

Thanks

using UnityEngine;
using System.Collections;

public class TurretRotationTest : MonoBehaviour {
	
	private Transform turretTransform;
	//public float rotationSpeed = 120.0f;
	
	void Start () {
		turretTransform = transform;
	}
	
	void Update () {
		
		
		if(Input.GetKeyDown("m")) {turretTransform.localRotation *= Quaternion.AngleAxis( 10 * Time.deltaTime, Vector3.up );
		}
		
		
		
		
	}
	
}

GetKeyDown() only returns ‘true’ during the update that the key was pressed. Try GetKey() instead.

Thank you!! that did it!