CETME Model L

Lore & Background

The CETME Model L is a selective fire, roller-delayed blowback firearm with a semi-rigid two-piece bolt mechanism. During unlocking, two cylindrical rollers in the bolt head are cammed inward against the barrel extension, propelling the bolt carrier rearward faster than the bolt head, which remains closed until chamber pressure drops. The weapon fires from a closed bolt and uses the NATO-standard 5.56×45mm cartridge with the 62-grain SS109 projectile. The safety and fire selector lever on the left side of the receiver has three settings: 'S' (safe), 'T' (semi-automatic), and 'R' (fully automatic); initial production rifles also had a burst selector option that was abandoned.

The rifle's barrel features a 3-prong flash suppressor (later a 'birdcage' style), both designed to launch rifle grenades. The fixed stock, pistol grip, and handguard are made of high-strength lightweight plastic. Early handguards were square in section and caused heat retention problems, leading to a round 'half length' handguard of thicker plastic over a full-length stamped steel support piece. Most military rifles received the new handguard, but Guardia Civil rifles retained the squared version. The rifle feeds from standard NATO STANAG magazines, but issued steel magazines had thick walls that caused misfeeds and stuck magazines; soldiers often sought out other STANAG magazines from surplus stores or from US troops during NATO exercises.

The Model L is equipped with adjustable iron sights: a forward post (thin or thick version) and a flip-up rear sight with 200 and 400 m settings (early models had a rotating drum rear sight with 100, 200, 300, and 400 m apertures). The Model LV marksman variant uses a fixed STANAG mount for a 4-power ENOSA scope; an alternate version for the Spanish Marines uses a dovetail mount for the British SUSAT scope. A carbine variant, the Model LC, has a short barrel and collapsible metal stock but cannot use a bayonet or rifle grenades.

Reader's Guide

The CETME Model L represents the Spanish military's transition from the 7.62mm CETME Model C to the NATO-standard 5.56×45mm cartridge, a shift that aligned with broader alliance trends in the 1980s. Its roller-delayed blowback mechanism, inherited from earlier CETME designs, offered a proven operating principle, though the rifle faced notable reliability issues. These problems stemmed partly from Spanish-made INI ammunition, which produced higher chamber pressure and had hard primers, and partly from the issued steel magazines, which were prone to misfeeds and could not be discarded despite being intended as expendable. Spanish soldiers often circumvented these issues by using non-issued STANAG magazines from other NATO forces. The Model L served as the standard Spanish Army rifle from 1987 until it was largely replaced from 1999 onward by a license-built variant of the Heckler & Koch G36E. Its variants—the LC carbine and the LV marksman—addressed specific roles, and the rifle has seen use by Spain, Malawi, and Ukraine. In the United States, the CETME L is available as a civilian legal firearm through MarColMar Firearms LLC, using original parts sets with new US-made receivers and barrels.

Did You Know?

• The CETME Model L was developed at the state-owned CETME establishment in Madrid.
• The rifle's issued steel magazines were supposed to be expendable at 25 pesetas each, but soldiers were forbidden to discard them.
• Spanish soldiers at NATO exercises often searched for discarded US magazines to replace their own problematic ones.
• The Model LC carbine cannot mount a bayonet or launch rifle grenades.