Having feeding issues on your scarab? Bullets smashing into the feed ramp and not into the chamber? Mag release not getting a good grip on your magazines? Come on down! This is just a DMB sten mag, but I've made the release lock (idk what its called), a little deeper and longer so that the scarab mag release can actually get a good grip on it, I've also extending the locking tab down 3mm so the magazine is higher up in the receiver. I know I should have just modified the mag release instead of the mag, but I didn't want to. Anyways... if you're having feeding issues try this puppy out, it worked wonders and my Lotus M-11 with printed upper housing, (it's a re-branded scarab, but the upper is cool, it's on my page) and she runs perfectly now.