Sarco 15 round mags

Just wanted to share what I found about the Sarco 15 round mags they are currently selling.
I bought four of these magazines and two pouches. (M1 Carbine Pouch and Magazine Combo)
The magazine follower are square cut like the 30 rounders and will hold the bolt open on last shot.:thup: The inside edges are a bit sharp, but I will be smoothing them out.
Attachment 65515

The picture appears to show a used magazine. Do you see any markings on them? I have some new Korean mags from Midway that are marked PW, but just as they come out of the packaging, they don't work as well as genuine GI mags. - Bob