Light machine gun CETME Ameli The CETME Ameli of the Spanish Army Type Light machine gun Place of origin Spain Service history In service 1982–present Used by See Users Wars Mexican Drug War[1] Production history Designer CETME Designed 1974–1981 Manufacturer General Dynamics Santa Bárbara Sistemas Produced 1982–2013 Specifications Mass 5.3 kg (11.68 lb) Length 970 mm (38.2 in) Barrel length 400 mm (15.7 in) Cartridge 5.56×45mm NATO Action Roller-delayed blowback Rate of fire 800–1,200 rounds/min Muzzle velocity 875 m/s (2,871 ft/s) (SS109 cartridge) Effective firing range 300—1,000 m sight adjustments Maximum firing range 1,650 m Feed system 100 or 200-round disintegrating M27 ammunition belt Sights Rear aperture sight and front post 340 mm (13.4 in) sight radius