has to be a ten rounder riveted in, lol.
I had no idea tell I saw one at a gun show! LOL you have to pop out the take down pin to reload. The rivt went right through the side of the mag well.
See what makes it evil is it has a pistol grip and a removable mag, thats why you can still buy an M1a or a Mini 14, no pistol grip.
Cali sucks for gun ownership.