A retrofitted version of the MS-05 Zaku I, the MS-05L Zaku I Sniper Type's primary weapon was a beam sniper rifle, which was powered by a backpack-mounted sub-generator. Its head unit was fitted with the same type of composite monoeye as the MS-06E Zaku Reconnaissance Type, granting it the necessary sensor range for long-range sniping. It was also equipped with a pair of head-mounted Vulcan guns for defense. A foldable knee pad was installed in its right knee, which can deploy to stabilize the mobile suit during sniping missions. Essentially, the Zaku I Sniper Type was a self-propelled long-range mega particle cannon turret.
In U.C. 0096, a customized Zaku I Sniper Type piloted by the Zeon remnants leader Yonem Kirks was deployed during the attack on Torrington Base. Kirks' Zaku I Sniper Type supported the Zeon remnant forces on the ground from the air inside a Fat Uncle Custom. Despite being nearly two-decades-old by then, it still proved to be quite effective, taking out multiple modern Federation units.
Ultimately, the Zaku I Sniper Type was cornered by Londo Bell's Tri-Stars team in their RGM-96X Jestas. With only one shot left, Kirks stabbed the beam sniper rifle into the suit's abdomen and attempted to detonate its backpack generator, but the Jestas managed to destroy the suit's arms and rifle before he could fire it, killing him as the suit fell to the ground after the Jestas shot it down.