Editing GAU-12 Equalizer (section)

{{Short description|25 mm rotary aircraft autocannon}}
{{More citations needed|date=November 2017}}
{{Infobox weapon
| name               = GAU-12/U Equalizer
| image              = A GAU-12 25 mm Gatling gun static display sits outside the Munitions Materiel Handling Equipment Focal Point building at Eglin Air Force Base, Fla., April 24, 2013 130424-F-OC707-003.jpg
| origin             = United States
| type               = [[Rotary cannon]]
<!-- Type selection -->| is_ranged          = Y
| is_bladed          = 
| is_explosive       = 
| is_artillery       = 
| is_vehicle         = 
| is_UK              = <!-- Service history -->
| service            = 
| used_by            = 
| wars               = <!-- Production history -->
| designer           = [[General Electric]]
| design_date        = 
| manufacturer       = [[General Dynamics]]
| production_date    = 
| number             = 
| variants           = <!-- General specifications -->
| weight             = GAU-12: {{convert|270|lb|kg}} with feed system <br />GAU-22: {{convert|230|lb|kg}} without feed system
| length             = 83.2 in (2.11 m)
| part_length        = 
| width              = GAU-12: {{convert|11.5|in|mm}} <br />GAU-22: {{convert|11.1-13.3|in|mm}}
| height             = {{convert|10.2|in|mm}}
| crew               = <!-- Ranged weapon specifications -->
| cartridge          = 25 × 137 mm
| caliber            = 25 mm (0.98 in)
| barrels            = GAU-12: 5-barrel <br />GAU-22: 4-barrel <br />(progressive RH parabolic twist, 11 grooves)
| action             = Hydraulic, Electric, Pneumatic
| rate               = GAU-12: 1,800–4,200 rounds per minute <br />GAU-22: 3,300 rounds per minute
| velocity           = (HEI) 3,400 ft/s (1,040 m/s); (API) 3,280 ft/s (1,000 m/s); (APEX) 3,200 ft/s (970 m/s)
| range              = 
| max_range          = {{convert|12000|ft|m|sigfig =3}}
| feed               = Linked or linkless
| sights             = Lead Computing Optical Sight System (LCOSS)
<!-- Artillery specifications -->| breech             = 
| recoil             = 
| carriage           = 
| elevation          = 
| traverse           = <!-- Bladed weapon specifications -->
| blade_type         = 
| hilt_type          = 
| sheath_type        = 
| head_type          = 
| haft_type          = <!-- Explosive specifications -->
| diameter           = 
| filling            = 
| filling_weight     = 
| detonation         = 
| yield              = <!-- Vehicle specifications -->
| armour             = 
| primary_armament   = 
| secondary_armament = 
| engine             = 
| engine_power       = 
| pw_ratio           = 
| suspension         = 
| vehicle_range      = 
| speed              = 
}}

The '''General Dynamics GAU-12/U Equalizer''' is a five-barrel [[25 mm caliber|25 mm]] [[Gatling gun|Gatling-type]] [[rotary cannon]]. The GAU-12/U is used by the United States, Italy and Spain, which mount the weapon in their attack jets such as the [[AV-8B Harrier II]], airborne [[gunship]]s such as the [[Lockheed AC-130]], and land-based fighting vehicles.
A lighter four-barrel version, designated '''GAU-22/A''', is mounted on [[F-35 Lightning II]] fighter jets.
[[Category:Multiple-barrel firearms]]