Describing how California's SB-880 will re-define "assault weapons," Jacob Belemjian of The Firing Line shooting range in Clovis points out exactly what parts of the rifle will make the gun illegal at the start of the new year, and what can be modified on the gun to make it legal.

Despite the AR-15 he uses as an example requiring a special tool in order to detach the magazine, Belemjian says the feature, which in the past allowed the gun to bypass detachable gun magazine restrictions, means the gun would be in violation of the new laws.

Under the new law, a "fixed magazine" is now defined as "an ammunition feeding device contained in, or permanently attached to, a firearm in such a manner that the device cannot be removed without disassembly of the firearm action."

Belemjian also described other features on his example centerfire, semi-automatic rifle that would make it illegal, such as the aforementioned detachable magazine and any of the following features: a collapsible, or adjustable, or foldable stock; a pistol grip that protrudes below the trigger guard; a forward pistol grip; and a flash hider.