Several military versions of the Hirundo A109 have been developed for army, naval, and patrol use. The four-blade main rotor is mounted on hump above the body midsection, while weapon-carrying platforms at bottom midsection. Two turboshaft engines are mounted on the top of the fuselage, with exhaust ports protruding upward and to the rear. The fuselage is rectangular with a flat belly and retractable landing gear and an upswept, tapered rear section.. The tapered, rounded nose section features a stepped cockpit. The swept-back and tapered tail fin with angular tip. Swept-back and tapered belly fin with angular tip. Small rotor on left side attached to the tapered tail boom.