The Type 80 (Chinese: 80式通用机枪) is a general-purpose machine gun (GPMG) manufactured by Norinco in China, based on the Soviet PKM.

The machine gun was certified for design finalisation in 1980 and entered the PLA service in the mid-1980s, specifically in 1983.

[6] The development of the GPMG started when Chinese firearms engineers studied PKMs that were captured from Vietnamese forces during the Sino-Vietnamese War.

[6] Changfeng Machinery was subcontracted to create the CS/LM4 in order to have it chambered to 7.62 NATO caliber.

[7] The CS/LM4 has been marketed to countries that have used Soviet/East European/Chinese-made small arms, but have oriented to use NATO-based ammo.