South Korean K1A
The South Korean K1A, technically a 5.56 assault rifle, is classified as a submachine gun domestically. It features a direct impingement gas system, similar to the M16, which is noted as less ideal for its short 10.4-inch barrel compared to the K2's piston system. The rifle accepts M16 magazines and has a four-position selector, though the magazine release is criticized for its reach.









