A semi-automatic version of the Zastava M72. The M72 was a gas-operated, air-cooled, drum-fed, selective fire, shoulder-fired weapon with a bipod. It was originally used as a squad automatic weapon, like the Soviet RPK but has unique design features such as the heavy finned barrel allowing for maximum cooling under heavy fire, The B1 designation denotes the modernized version of the rifle with the heavy 1.5 mil stamped receiver with reinforcement ridges. Not only a great collector\'s item but a fantastic long-range shooter. Each rifle ships in a nice heavily padded rifle case for maximum protection, value, and convenience. The carry cases may vary in type from order to order based on availability, but they will always work great for carrying and storing the rifle as well as adding tremendous value to the purchase.