Patent attributes
The bolt hold-open system is a firearm bolt locking or holding mechanism for an AK-47 or similar firearm capable of automatically keeping the bolt of the firearm in an open position when the firearm magazine is empty. The bolt hold-open system includes a locking assembly and a modified magazine. The bolt hold-open system also provides a manual control for keeping the bolt in an open position and for releasing the bolt. The system prevents the bolt carrier from closing while there is an empty magazine in the gun, but can be easily activated to release the bolt when the magazine is removed or a non-empty magazine is in the magazine receiver. The system requires minimal modifications to the firearm and magazine and is easily adaptable to firearms similar to the AK-47 that fire ammunition in a wide range of calibers and configurations.