How do you tell a Winchester type V stocks

[tankerfrank]

like the title said,How do you tell a Winchester type V stocks, my stock is made of walnut and in the sling well is marked W or M with the flaming bomb, So how can I tell did Winchester still have a flat bottom like on the type I and II?

[Tuna]

I am pretty sure it's an M marked stock. Winchester did not use the type 5 stock. They didn't make many M2 carbines compared to Inland so they never went to the type 5.