Quick presentation by ASG of their licensed Bersa Thunder 9 Pro Non-Blowback Pistol... "Originally developed BERSA, as a military/law-enforcement sidearm, the Thunder® Pro HC was built to perform under adverse conditions and provide decisive stopping power. This is a semi-automatic 6 mm Airsoft version fully licensed by BERSA. It is powered by a 12g CO2 cartridge stored in the grip using the easy-load system and the BB's are put in a removable stick magazine.