Patent attributes
A firearm is disclosed which is a handgun having a frame and a slide connected to the frame which is operable to reciprocate between a forward battery position and a rearward recoil position. The barrel is connected to the frame and to the slide and it has a forward muzzle end and a rearward chamber end that rotates between a locked position and an unlocked position during cycling of the firearm. The barrel has locking elements at its forward end including a plurality of protruding lugs configured to interface with the slide in the locked position when the slide is in the battery position to prevent axial movement of the slide with respect to the barrel. Moving the trigger forward out of its released position lowers a barrel locking component out of engagement with a slidable trunnion to allow the slide and barrel to disassemble from the frame.