ICS Airsoft does an overview video of their AK Series, the ICS IK-74 AEG Series... "Remaining consistent with the ethos of ICS, the IK-74 utilizes a QD frame to facilitate ease of upgrading and maintenance. A combination of the ICS Turbo 3000 motor and an M120 spring will ensure the best performance and durability. The High-capacity magazine is also in line with the ICS ethos; a high strength spring provides a continuous and smooth feed of BBs at any rate of fire. The ICS IK-74 is certainly the best way to experience a slice of the Russian military."