American-180

The concept began with the Casull Model 290 that used a flat pan magazine similar to designs widely used prior to World War II.

A semi-automatic only variant called the American SAR 180/275 is still produced on a custom basis by E&L Manufacturing of Riddle, Oregon.

The American-180 was purchased mostly by private parties prior to the Hughes Amendment in 1986, which banned the production of automatic weapons for the American civilian market.

[7][8] Despite the low power of the .22 Long Rifle round, testing demonstrated that automatic fire could penetrate even concrete and bulletproof vests from cumulative damage.

[citation needed] However, the target would have to remain still for some amount of time to allow the cumulative damage to amass in the same area to achieve this.

American 180 Rifle System with Laser LOK Sight