The .50 BMG (.50 Browning Machine Gun), also known as 12.7×99mm NATO, and designated as the 50 Browning by the C.I.P., [1] is a .50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard service cartridge for NATO forces.

12.7×99毫米口径北约弹 （英語： 12.7×99mm NATO cartridge），又稱.50口径勃朗宁机枪弹 （英語：.50 Browning Machine Gun，简称.50 BMG），是1910年代後期特別為1921年生產的 白朗寧M2重機槍 發展出來的彈藥，是由.30-06春田 步槍子彈為基礎加碼放大而來，1921年正式服役。

The .60, sometimes referred to (inaccurately) as the T17, is a rimless, bottlenecked rifle cartridge developed in the United States beginning in 1939. It was never used in service, but was enlarged to become the basis for the 20x102, which remains the standard US aircraft round to this day.

Engineered as the first shoulder fired semi-automatic 50 BMG rifle, the Model 82A1 has been proven in combat in every environment from the snow covered mountains, to the desolate deserts, and everything in between. Its low felt recoil and reliable repower delivers on target with every pull of the trigger.

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.

Discover the unparalleled power and precision of 50 BMG rifles at Hinterland Outfitters, your premier source for high-caliber firearms. We proudly carry an extensive range of top-tier brands like Barrett, Armalite, Steyr, and Accuracy International featuring popular models such as the Barrett M82A1, Armalite AR-50, AI AX50 ELR, and Steyr HS 50.

.50 BMG是指一种机枪弹药，于1910年由美国研制，多用于北约国家，仍在使用。 .50 BMG，又称“12.7 NATO”。 于1910年特别为M2勃朗宁机枪发展出来的弹药，是由.30-06步枪弹为基础加码 …

美国从1920年代开始，勃朗宁.50口径机枪（.50 BMG既是枪的名字，也是弹的名字）在二战、朝鲜战争、越南战争中都大量使用，直至在21世纪初期的伊拉克和阿富汗的军事行动中仍在使用。

2010年3月11日 · .50 BMG，又称“12.7 NATO”，全名是 .50 Browning Machine Gun。 于1910年特别为M2勃朗宁机枪发展出来的弹药，是由.30-06步枪弹为基础加码放大而来，1921年正式服役。 .50 BMG弹种繁多，全金属被覆弹、曳光弹、穿甲弹、燃烧弹等。 使用于机枪时须用金属弹链。

50 BMG semi-automatic rifles for long distance shooting. Available in 1, 5+1 and 10+1 round capacity.