Key Advantages

  • HELLFIRE missiles, Laser Guided Rockets and Hydra-70 rockets
  • .50 cal, 7.62mm and 30mm automatic weapons
  • External fuel tanks
  • Crew-served and fixed-forward
  • Operable with doors open or closed
  • 100% machined to tight tolerances for high accuracy
  • Modular and rapidly reconfigurable
  • Alkan 14-inch NATO bomb rack


CFD International offers three designs to meet the needs of any customer. For customers who already own the IDAS mount, HOSS is a low-cost upgrade that reuses many legacy components to save expense. HOSS is also sold as a complete, standalone system. It adds guided missile/rocket capability to the aircraft, plus two more stores. HOSS is completely modular for maximum mission flexibility. The crew-served capability of the IDAS system remains unchanged. The mount also supports external fuel tanks. Customers needing to fold and stow the weapons inside the cabin with doors closed need the Ordnance Mounting System (OMS). It supports the same weapons, and adds crew-served capability for the GAU-19 3-barrel, .50 cal Gatling gun or LR30 30mm cannon. The OMS mounts to the floor of the helicopter via 4 hard points that fold flat for a “slick” floor when not in use. The 4 fixed-forward stores are remotely fired by the pilot. The center section of the system provides quick-release mounting locations for ammunition. All components are modular and rapidly-reconfigurable without tools. If crew-served stations are not required, our Light Weight OMS (LWOMS) is the preferred solution.

Product Comparison

« HOSS » « OMS » « PGMS »
Unique Characteristics
  • Externally mounted (except ammo)
  • Attaches to existing hard points
  • Rocket/missile capable
  • Crew-served and fixed-forward modes
  • 6-store (a/c mod required for full capacity
  • Through cabin mount
  • Easier installation
  • Rocket/missile capable
  • Crew-served and fixed-forward modes
  • 6-store
  • Federated design draws power from battery
  • Crew-served only
  • 2-store
Crew-served stores 2 2 2
Fixed Forward stores 6 6 0
GAU-18/M2AC .50 cal machine gun
M3D .50 cal machine gun
M3P .50 cal machine gun
GAU-21/M3M .50 cal machine gun
GAU-19 3-barrel, .50 cal Gatling gun
M240 7.62mm machine gun
GAU-2/M134 7.62mm Gatling gun
M260 7-shot rocket pod
M310 HELLFIRE missile launcher
LR30 Low Recoil 30mm machine gun
.50 cal BMG capacity (per a/c) 1,200 1,200 1,200
7.62x51mm NATO capacity (per a/c) 6,000 6,000 6,000
HELLFIRE missile capacity (per a/c) 4 4 0
Hydra-70 rocket capacity (per a/c) 76 76 0
LGR capacity (per a/c) 32 32 0
Field-of-fire 0° to 171° azimuth and +0° to -59° elevation. 0° to 171° azimuth and +0° to -59° elevation. 0° to 171° azimuth and +0° to -59° elevation.
Stowage positions 0° (forward)
90° (outboard)
171° (aft)
0° (forward)
90° (outboard)
171° (aft)
0° (forward)
90° (outboard)
171° (aft)
  • Military aerospace grade workmanship.
  • Compliant with environmental requirements (solar radiation, high/low/shock temperature, altitude, humidity, rain, ice, salt fog, fungus, sand, and dust) per MIL-STD-810G.
  • Compliant with explosive atmosphere requirements per MIL-STD-810G.
  • Compliant with human factors requirements per NATICK/TR-89/044 and MIL-STD-1472G.
  • Gunfire clearances per MIL-STD-1289.
  • Compliant with non-operating environment requirements (high/low/shock temperature, and altitude).
  • Compliant with induced environments [functional/bench-handling/crash-hazard shock, 6G’s acceleration, fluid susceptibility, structural vibration (5% separation), and gunfire vibration (1 hour/axis)].
  • Fatigue life IAW MIL-STD-882D.
  • Compliant with structural requirements (flight/landing/ground/transport loading conditions, airframe crash criteria, floor loading, interface load limits, and dynamic stability).
  • Compliant with military aerospace materials, processes and parts requirements.
  • Ground resonance per AVNS-PRF-10002.
  • Compliant with E3 requirements (lightning, EMC, EMI, ESD, and electrical bonding).
  • Compliant with MIL-STD-704F electrical requirements (non-essential busses only, fuse/circuit breaker, 115 VAC, 28 VDC, exported transients, voltage spike, dielectric withstanding voltage, insulation resistance, grounding requirements, shield grounding, wire shields, primary power returns, secondary power returns, signal returns, shielding gaskets, E3 hardness, and molded harnesses).
  • Product marking per MIL-STD-130N.
  • Interchangeable per MIL-I-8500D.
  • FOD resistant.
  • Flaw tolerant.

Note: typical spec compliance shown above; actual compliance varies by product.