Stock lengths...

What are the different lengths of buttstock for the No.4? I'm trying to figure out which one I have...

If it's unmarked, it's a normal. The rest were marked B, S, N, L. The Normal was marked until they decided most were normal, so by process of elimination if you needed something else they marked it so you could tell. There's a thread here that went way too far with that whole thing... This one's more to the point I think. https://www.milsurps.com/showthread.php?t=3862