The GAU-19/A (GECAL 50) is an electrically driven, three-barrel rotary heavy machine gun that fires the .50 BMG (12.7×99mm NATO) cartridge. The GAU-19/A is designed to accept standard NATO .50 caliber M9-linked ammunition. The rate of fire is selectable to be either 1,000 or 2,000 rounds per minute.

the GAU-19/B offers a high rate of fire in a simple, low-cost weapon system and produces devastating firepower against light vehicles and ground forces. Installed as secondary armament on larger weapon systems, the GAU-19/B affords protection against close-in ground threats and provides air defense capability. Sea:

GECAL 50，被美国军队命名为GAU-19/A（英语：GAU-19/A；GAU，全写：Gun Automatic Universal，意为：通用自动火炮），是由美国通用电气开发、由通用动力制造的电力驱动加特林式机枪，发射12.7 x 99 毫米（.50 BMG）子弹。

gau-19/b 12.7毫米机枪是gau-19/a 3管重机枪的轻量型，现安装在美国武装部队的飞机、地面车辆和舰船上。 该枪具有反应速度快、火力强等特点，安装在 装甲人员输送车 或高机动多用途轮式车等多用途车辆上，能够有效对付轻型车辆和地面部队。

GAU-19/A有两种供弹方式，一种是无链供弹，另一种是装上一个脱链机构后用标准的M9可散式弹链供弹；其射速在每分钟1,000发至2,000发之间可调。 目前最常见型号是作为HMMWV的武器，其射速一般设定为1,300发/分，平均的后坐力达到500磅。 GAU-19/A最初的设计目的是为了弥补M134的威力和射程不足的问题，现在有人建议作为V-22鱼鹰武装型的武器，但该项目已被取消。 在2005年，GAU-19/A被批准在OH-58D直升机上使用，现在也计划可能用于对陆军最新的武 …

Fulcrum’s GAU-19/B is a lightweight, three-barrel .50 Cal. Gatling gun ideal for use in land, sea, and air operations. Accessories include a full range of products to control, deploy, maintain, and store the gun.

GAU-19/B is a new variant that was first delivered in 2012. It is lighter variant of the GAU-19/A that was developed for the US Armed Scout Helicopter program. It has a fixed 1.300 rpm rate of fire.

gau-19/a（又称gecal 50）是一款由美国武器制造商通用电气所研发、目前由通用动力所生产的电力（外力）驱动式三管重型加特林式 机枪，发射12.7×99毫米 北约 口径（.50 bmg）制式步枪 子弹。

The GAU-19/B is a lightweight, three-barrel Gatling gun ideal for use in ground, naval, and air operations. Designed for .50 caliber (12.7mm) M9-linked ammunition and capable of firing 1,100-1,300 rounds per minute, the GAU-19/B lays down devastating firepower. The gun’s lightweight, fully qualified design is field-proven

2023年8月31日 · Fulcrum Concepts, LLC, a leading provider of weapons system integration capabilities for the tactical aviation community, has acquired ownership of the GAU-19A/B .50 caliber Gatling gun from General Dynamics Ordnance and Tactical Systems (GD-OTS).