I am certain this has been discussed at length somewhere in this forum, but I can't find my answer using the search function. I did see how to tell the difference by taking the action out of the stock, but since it's in the middle of hunting season right now that ain't gonna happen. I am wanting to place an order for a McMillan A5, so I believe I will need this information. Is there any way to tell what I have without removing the action and risking loosing my zero? Thanks in advance.