Six pointed Star marking on Sten mag.

[Vincent]

That's because the 8 degree 'angle of presentation' (the AoP) in a STEN is incorporated into the feed lips of the Sten magazine. The mag is square on in the gun but it is the mag that presents the round at 8 degrees.
Whereas the 8 degree AoP with a STERLING is incorporated into the actual mag housing of the gun. The rounds are square-on in the mag BUT the mag is angled in the gun at 8 degrees.
But they both present the cartridge at 8 degrees.
Getting complicated now or what.......

They both present the rounds at 8 degrees as long as you put a STEN magazine in a STEN and a Sterling magazine in a Sterling.

A Sterling magazine presents the rounds square-on in a STEN. So it doesn’t feed.



A STEN magazine in a Sterling presents the rounds at 16 degrees. It seems like a lot compared to the Sterling magazine. But it works!

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