Gun reformers argue that the assault-weapons ban, which expired in 2004, might have prevented some of the carnage because that law limited newly manufactured magazines to 10 bullets.

stuck on stupid….a 30 round clip probably increases the chance of jamming by three times….a really smart killer would take five minutes and learn to change 10 round clips almost instantaneously….whatever….of all the 900, or however many gun laws in the US, the assault weapons ban was the worst of them all and did nothing to decrease gun violence

thehill.com