The .50 Browning Machine Gun is a .50 in caliber cartridge developed for the M2 Browning machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard service cartridge for NATO forces as well as many non-NATO countries.

Can you legally own a 50 cal?

In fact, under federal law and the laws of nearly all states, any 18-year-old who passes a background check can buy a 50 caliber rifle. ... Like machine guns, 50 caliber rifles are extremely destructive military weapons, and they should be regulated accordingly.

How much does a .50 cal gun cost?

Serbu BFG-50

Serbu's BFG-50 starts at $2,395 as a base price, making this rifle much more affordable for everyday shooting enthusiasts. This is a single-shot rifle fitted with either a standard 29.5-inch match grade barrel, a carbine 22-inch barrel or a 36-inch heavy barrel.