The CETME Rifle is a stamped steel select fire battle rifle produced by the Spanish armaments manufacturer Centro de Estudios Tecnicos de Materiales Especiales (CETME). The Model 58 used a 20-round box magazine and was chambered for the 7.62×51mm NATO round.The CETME 58 would become the foundation of the widely deployed German Heckler & Koch G3 battle rifle. Semi automatic variants were also produced for the civilian market and parts kits imported into the US have become popular for Semi auto builds. The CETME Model L was a downsized variant of the CETME system, chambered for the 5.56×45mm NATO cartridge. The CETME L was adopted by the Spanish Army in 1984 and was in service until it was replaced by the Heckler and Koch G36 rifle in 1999.