Defense Media Network's Dillon Aero interview describes Army Special Forces in Iraq using M134D systems on Humvees after 2005 ground-vehicle procurement work with Naval Surface Warfare Center Crane; the account directly links the guns to convoy engagements but is manufacturer-interview reporting rather than a unit after-action record.
Role detailsInfantry Weapons
M134D Minigun
Also known as
- M134D
- Dillon M134D
- Dillon Aero M134D
- M134D Gatling gun
- M134D mini-gun
The M134D Minigun is Dillon Aero's modernized six-barrel 7.62x51 mm NATO rotary machine gun for helicopter, vehicle, maritime, and fixed-position mounts. Publicly documented conflict context ranges from U.S. Special Forces vehicle use in Iraq and an Australian CH-47D installation at Kandahar Airfield to U.S.-supplied Philippine Marine Corps guns prioritized for troops fighting in Marawi.
Role in Conflicts
The Australian War Memorial identifies an M134D minigun mounted in Australian CH-47D Chinook A15-202 at Kandahar Airfield in 2009 and catalogs the image under the 2001-2021 Afghanistan conflict.
Role details- Side
- Philippine government forces
- Role in conflict
- High-volume Marine fire-support weapon supplied for Marawi-priority counterterrorism troops
Four M134D Gatling-style machine guns were transferred through U.S. counterterrorism assistance to the Philippine Marine Corps in June 2017; the Marine commandant said troops in Marawi were the priority recipients, while available sources document supply and intended operational priority rather than specific firing incidents.
Profile / Specs
Profile
- Origin
- United States
- Built by
- Dillon Aero
- Type
- Externally powered 7.62 mm rotary machine gun
- Service note
- 2000s-present
- Designer
- Dillon Aero modernization of the General Electric M134/GAU-2 Minigun family
- Designed
- Certified as the M134D after early-2000s Dillon Aero modernization work
- Developed from
- General Electric M134 / GAU-2 Minigun family
Specifications
- Caliber
- 7.62x51 mm NATO
- Configuration
- Six-barrel externally powered rotary machine gun
- Firing rate
- Fixed 3,000 rounds per minute on Dillon Aero M134D and M134D-H configurations
- Feed
- Application-dependent magazine or ammunition-handling system, with capacities up to 4,000 rounds
- Weight
- 56.9 lb fixed-forward or 66.1 lb crew-served for the standard M134D; 43.5 lb fixed-forward or 52.5 lb crew-served for the M134D-H
- Effective range
- Up to about 1,200 m according to Dillon Aero
Variants
Dillon's M134D family separates the standard steel gun from lighter titanium and hybrid weight-reduction configurations.
| Variant | Configuration | Designation notes |
|---|---|---|
| M134D-H | Hybrid lightweight configuration | Dillon Aero describes the M134D-H as the standard lightweight Minigun design, using titanium and skeletonized parts to reduce weight while retaining the steel gun's service-life advantages. Sources: M134D-H (Hybrid 7.62 x 51mm), The Evolution of the M134D Minigun |
| M134D-T | Titanium weight-reduction configuration | Defense Media Network's Dillon Aero interview describes the M134D-T as a titanium-housing and titanium-rotor design that cut weapon weight substantially, before Dillon moved to the hybrid configuration to recover service life at a small weight penalty. Sources: The Evolution of the M134D Minigun |
Ammunition Fired
Dillon Aero identifies the M134D family as a 7.62x51 mm system, which ties the gun to the cataloged NATO cartridge family rather than to a weapon-specific proprietary round.
| Ammunition | Ammunition type | Firing evidence |
|---|---|---|
 | NATO rifle and machine-gun cartridge | Dillon Aero identifies the M134D and M134D-H as 7.62x51 mm systems and lists the caliber in manufacturer specifications. Sources: M134D - Standard 7.62 x 51mm, M134D-H (Hybrid 7.62 x 51mm) |
Carrier Aircraft
Open collection and manufacturer material show the M134D family used on helicopter mounts as well as land and maritime mounts.
| Carrier | Carrier type | Carriage evidence |
|---|---|---|
 | Heavy-lift transport helicopter | The Australian War Memorial identifies an M134D mounted in Australian CH-47D Chinook A15-202 at Kandahar Airfield. Sources: M134D minigun mounted in a CH-47D Chinook helicopter |
Mounting And Feed Context
The M134D is not a standalone shoulder weapon; source material treats the gun, mount, electrical drive, and ammunition-handling hardware as an integrated installation for helicopters, boats, vehicles, and fixed positions.
| Installation context | Documented detail | Source basis |
|---|---|---|
| Air mounts | Dillon's modernization emphasized weight reduction for aviation users, leading from the steel M134D to titanium and hybrid configurations. | Dillon Aero and Defense Media Network background |
| Ground vehicles | Special Forces ground use grew from mid-2000s Humvee procurement work with Naval Surface Warfare Center Crane. | Defense Media Network interview/reporting |
| Ammunition handling | Dillon lists application-dependent ammunition systems and capacities up to 4,000 rounds, so capacity is installation-specific. | Dillon Aero specifications |
Timeline
M134D Minigun Key Events
M134D certification follows Dillon modernization
Defense Media Network's Dillon Aero interview says government approvals in the early 2000s certified Dillon's improved Minigun as the M134D.
Ground-vehicle procurement expands the role
The same interview describes Special Forces groups procuring M134D systems for Humvee use around 2005 through work with Naval Surface Warfare Center Crane.
Australian CH-47D installation documented at Kandahar
Australian War Memorial collection material identifies an M134D mounted in Australian CH-47D Chinook A15-202 at Kandahar Airfield during the 2001 War in Afghanistan.
U.S. assistance delivers guns to Philippine Marines
U.S. Pacific Command announced counterterrorism equipment for the Philippine Marine Corps that included four M134D Gatling-style machine guns during the southern Philippines fight.
Related Weapon Systems
Sources
M134D - Standard 7.62 x 51mmPublisher: Dillon Aero | Note: Supports manufacturer background, standard M134D caliber, firing rate, weight, ammunition capacity, effective range, and role across land, naval, and helicopter applications. | Accessed: 2026-06-29M134D-H (Hybrid 7.62 x 51mm)Publisher: Dillon Aero | Note: Supports M134D-H variant specifications, including weight, caliber, firing rate, magazine-capacity context, and hybrid lightweight configuration background. | Accessed: 2026-06-29The Evolution of the M134D MinigunPublisher: Defense Media Network | Note: Supports background on Dillon Aero's M134D modernization, early-2000s certification, M134D-T and M134D-H variant logic, air/boat/ground-vehicle applications, and 2003 Iraq War direct conflict-use reporting for U.S. Army Special Forces Humvee-mounted M134D systems. | Accessed: 2026-06-29M134D minigun mounted in a CH-47D Chinook helicopterPublisher: Australian War Memorial | Note: Supports 2001 War in Afghanistan direct conflict-use context: the collection record identifies an M134D minigun mounted in Australian CH-47D Chinook A15-202 at Kandahar Airfield and catalogs the photograph under Afghanistan, 2001-2021. | Accessed: 2026-06-29U.S. Military Presents New Weapons and Equipment to Philippine Marine Corps Commandant for Counterterror FightPublisher: U.S. Pacific Command | Note: Supports U.S. counterterrorism transfer background for four M134D Gatling-style machine guns supplied to the Philippine Marine Corps during ongoing southern Philippines operations. | Accessed: 2026-06-29Gov't troops in Marawi to receive new weapons, equipment from USPublisher: GMA News Online | Note: Supports 2017 Battle of Marawi direct conflict-use context: four M134D Gatling-style machine guns were supplied to Philippine Marines, and the Marine commandant said priority troops in Marawi would receive the equipment. | Accessed: 2026-06-29Philippine Marine Corps Citemar6 2019 Midyear IssuePublisher: Philippine Marine Corps | Note: Supports 2017 Battle of Marawi direct conflict-use context: Philippine Marine Corps modernization article describes partner-nation deliveries during the 2017 fight and lists M134D Mini-Guns supplied as Small Unit Riverine Craft weapon systems. | Accessed: 2026-06-29M134D EP.jpgPublisher: Wikimedia Commons | Note: Image provenance for a Dillon M134D photographed with the Peruvian Army; file page lists own work by Bryan L. Castro and CC BY-SA 4.0 licensing. | Accessed: 2026-06-29NH90 (NH-211) Kokonaisturvallisuus 2015 13 M134D.JPGPublisher: Wikimedia Commons | Note: Image provenance for a Finnish NH90 display showing an M134D-H Minigun door gun; file page lists own work by MKFI released into the public domain. | Accessed: 2026-06-29KRI Sultan Iskandar Muda-367 in the TNI MTF Konga XXVIII-P UNIFIL.jpgPublisher: Wikimedia Commons | Note: Image provenance for an M134D minigun aboard an Indonesian Navy corvette; file page lists Indonesian Navy authorship and public-domain status under Indonesian government-work rules. | Accessed: 2026-06-29