Best mag for fixed mag 300blk

[Nthill93]

so I'm building a fixed mag 300blk on a spikes lower with an epoxied bullet button. What's the best mag to use? Pretty sure DSI uses pmags which I have a couple. But if there's something better I'll use it. I'm most likely going to use a pmag 10/20 since I like the size of the 20 round better than 30 or 10

thanks

[Shotgun]

10 round pmag
if you have a jam you can pop the bottom of the mag off quick

[Heartlessmcfly]

Best mag would be a second lower with a detachable mag

[Nthill93]

Best mag would be a second lower with a detachable mag

Already got one of those on my featureless haha

[hawkeye]

[ATTACH=CONFIG]n38555[/ATTACH] Try this instead of the bullet button.