Direct proof of use
Rifle grenades appear in the 2003 Iraq War record through weapons-cache seizures rather than a confirmed public account of a rifle-grenade firing. Multi-National Division - Baghdad reported that soldiers found 64 rifle grenades in a western Baghdad cache discovered on October 21-22, 2006, during Operation Together Forward.
The cache record continued into 2008. Iraqi army soldiers, acting on a Sons of Iraq tip northwest of Lutifiyah, retrieved a cache that included 12 rifle grenades, while a July 8 Baghdad-area anti-insurgent operation listed rifle grenades among mortars, explosives, AK-pattern rifles, hand grenades, and other materiel seized by U.S. soldiers.
Sources: DVIDS Baghdad Cache October 2006, DVIDS Sons of Iraq Cache April 2008, DVIDS Coalition Forces Detain 30 July 2008
Timeline
The dated public record is concentrated in Baghdad and its approaches during the later counterinsurgency period. In August 2008, Multi-National Division - Baghdad reported four Yugoslavian-made rifle grenades in a New Baghdad factory cache found during Operation Borzoi Strike 1.
Two further late-2008 reports documented additional recoveries: national police and U.S. soldiers seized two 30 mm rifle grenades in West Rashid on October 10, and U.S. and Iraqi soldiers seized two rifle grenades in southern Baghdad on November 30.
Sources: DVIDS New Baghdad Cache August 2008, DVIDS Baghdad Caches October 2008, DVIDS Iraqi Coalition Forces November 2008
Narrative
The available Iraq War evidence places rifle grenades inside mixed insurgent or militia weapons stocks, not as a stand-alone weapon system with a clearly identified firing unit. The sources list them beside mortars, rockets, explosives, fuses, small arms, RPG rounds, and other munitions recovered by coalition or Iraqi security forces.
That pattern fits the catalog role for this conflict: captured, seized, or recovered materiel associated with Iraqi insurgent and militia forces. The sources support fielding or possession within the conflict environment, but they do not identify the exact rifle-grenade model in most cases, the original supplier, or a dated combat firing incident.
Sources: DVIDS Baghdad Cache October 2006, DVIDS Coalition Forces Detain 30 July 2008, DVIDS New Baghdad Cache August 2008, DVIDS Baghdad Caches October 2008, DVIDS Iraqi Coalition Forces November 2008