The QB78 family of CO2 rifles are the direct descendant of the famous Crosman 160 bolt action CO2 rifles. A "Chinese Copy" to put it accurately, but introduced in the US long after the original Crosman 160 had been discontinued. They've always been surprisingly inexpensive considering the blue steel and hardwood stocks they're made from. And over the years they've become more and more refined and have gained a wide following. We like to say the QB78 is the Ruger 10/22 of airguns because it has such a wide array of accessories, upgrades, and things you can do to build your own unique rifle.