Patent ID: 7707760

Claim:
Safety apparatuses for weapons, the safety apparatus comprising: an interchangeable barrel; a safety mechanism, wherein the safety mechanism can be moved between an open position that corresponds to an unlocked position and a closed position that corresponds to a locked position, the safety mechanism comprising: a feeder cover, wherein the feeder cover is part of cartridge loading equipment that supplies cartridges to the weapon, the feeder cover comprising: a locking mechanism that engages with a barrel locking device and prevents the feeder cover from entering the closed position when the interchangeable barrel is not coupled to the weapon; wherein the unlocked position prevents the weapon from being fired and the locked position allows the weapon to be fired; and wherein the barrel locking device couples the interchangeable barrel to the weapon and wherein the barrel locking device interacts with the safety mechanism and prevents the safety mechanism from entering the locked position when the interchangeable barrel is not coupled to the weapon via the barrel locking device.