Daewoo K1A1: A Hybrid AR-15 and AR-18
The Daewoo K1A1 is a unique South Korean carbine that blends AR-15 and AR-18 operating systems. It features an AR-15 direct gas impingement system and bolt, but uses an AR-18 style dual recoil spring system above the bolt carrier, allowing for a collapsing stock without a buffer tube. Originally designed to replace the M3 Grease Gun, it was later imported into the US as a semi-automatic variant with a 16-inch barrel.





![5.56mm [Part II] - M193 vs. M855 Green tip](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2F6Iu-_TkpfO8%2Fhqdefault.jpg&w=3840&q=75)



