Collectors of airsoft guns that are based on other countries apart from the usual well-known ones can check this video from Toystar giving an overview of the K-1/K-2 air-cocking airsoft rifles. These airsoft rifles are based on the designs of Daewoo Precision Industries developed  by Agency for Defense Development of South Korea. The K1 was intended to replace the M3 submachine gun whilst the K2 replaced the M16A1 that was used by the Republic of Korea Armed Forces. It would be nice if there are AEG or GBB versions.