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machine gun

A machine gun is a fully automatic mounted or portable firearm, designed to fire bullets in quick succession from an ammunition belt or magazine, typically at a rate of 300 to 1800 rounds per minute. Fully automatic firearms are generally categorized as submachine guns, assault rifles, battle rifles, automatic shotguns, machine guns, or autocannons. Machine guns with multiple rotating barrels are referred to as "rotary machine guns".
As a class of military firearms, true machine guns are fully automatic weapons designed to be used as support weapons and generally used when attached to a mount or fired from the ground on a bipod or tripod. Light machine guns are small enough to be fired hand-held, but are more effective when fired from a prone position. The difference between machine guns and other categories of weapons is based on caliber, with autocannons using calibers of 20 mm or larger, and whether the gun fires conventional bullets, shells, shotgun cartridges, or explosive rounds. Fully automatic guns firing shotgun cartridges are usually called automatic shotguns, and those firing large-caliber explosive rounds are generally considered either autocannons or automatic grenade launchers ("grenade machine guns"). Submachine guns are hand-held automatic weapons for personal defense or short-range combat firing pistol-caliber rounds. In contrast to submachine guns and autocannons, machine guns (like rifles) tend to have a very high ratio of barrel length to caliber (a long barrel for a small caliber); indeed, a true machine gun is essentially a fully automatic rifle, and often the primary criterion for a machine gun as opposed to a battle rifle is the presence of a quick-change barrel, heavyweight barrel, or other cooling system. Battle rifles and assault rifles may be capable of fully automatic fire, but are not designed for sustained fire. Many (though by no means all) machine guns also use belt feeding and open bolt operation, features not normally found on rifles.
In United States gun law, machine gun is a legal term for any weapon able to fire more than one shot per trigger pull regardless of caliber, the receiver of any such weapon, any weapon convertible to such a state using normal tools, or any component or part that will modify an existing firearm such that it functions as a "machine gun" such as a drop-in auto sear. Civilian possession of such weapons is not prohibited by any Federal law and not illegal in many states, but they must be registered as Title II weapons under the National Firearms Act and have a tax stamp paid. The Hughes Amendment to the Firearm Owners Protection Act of 1986 banned new production of firearms classified as machine guns for most civilian applications, however, so only "grandfathered" weapons produced before this date are legally transferable.

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  1. O

    National  glock auto conversion kits

    looks like they have been shipping in from china. ATF made or it was given willingly the names from paypal. Illegal machine gun conversion devices smuggled into US - CNN I hope you didn't indulge.
  2. RicInOR

    Knob Creek Machine Gun Shoot

    What the World’s Biggest Machine-Gun Shoot Looks Like Note the source - New York Magazine. Wish I could afford that hobby.
  3. S

    Looking to get into the machine gun game

    Looking to take the plunge and get my first full auto. Have convinced my other half that it's "strickly for investment purposes." I would like to find an M11A1 or an M11/9 preferably local. I'm aware of wait time and costs but would like to find an FFL with alot of experience to walk me through...
  4. CountryGent

    I Found a Machine Gun: What Should I Do?

    I found this discussion interesting, so thought I'd pass it along. Cheers.
  5. 808hondacrguy

    “With minimal work, it can be converted to a machine gun.”

    :eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek::eek:
  6. Newberg

    WTB OR  WTB: Transferable Machineguns

    WTB: Looking to purchase transferable machineguns in OR or out of state for transfer to a local OR dealer. I have over a decade of buying experience when it comes to Transferable Machineguns. Specifically: M16's - Factory guns or conversions, AC556, M10, M11, M11/9, SW76/MK760...
  7. RicInOR

    International  Machine Gun Killings London

    Less than SFW potential in the side bar Machine gun and knife attacks leave four injured as London reels from night of bloodshed Machine gun and knife attacks leave four injured as London reels from night of bloodshed FOUR PEOPLE are injured after a machine gun attack and three stabbings...
  8. RT Hand LF Eye

    Uzi Mod B help and identification

    Hello. I'm new to this community and to owning machine guns. I am looking for some help in understanding this uzi. There are markings in Hebrew and I was able to find some details online. I like to learn as much as I can about this beauty. It's not for sale, so please don't try and ask to buy...
  9. The Heretic

    National  Update: DOJ reworking "machine gun" regs to include "bump stocks"

    So it seems they are pushing this thru after all. Not just saying they would and then letting it fade. And yes, I know there is another thread on Trump and Bumpstocks. That one has turned into a big political debate. Maybe keep this one on topic regarding DOJ/BATFE? As such, I see no mention...
  10. CountryGent

    National  Former East Coast Gun Dealer to Prison for Illegal Machine Gun and Laser Sights Acquisition

    Looks like these guys royally screwed up their lives: Former East Coast Gun Dealer to Prison for Illegal Machine Gun and Laser Sights Acquisition The machine-gun part of the conviction is obvious, but the laser sight part of it seems curious.
  11. CountryGent

    What You Didn't Know About the 1968 Machine Gun Amnesty

    There is some interesting info in this video. Just passing it along.
  12. Lazyfaire

    How to melt a suppressor

    As hard as they are to come by why would you do this? Guy MELTS His Suppressor with 700 Round Burst! | Michael Berry | KTRH
  13. 3MTA3

    WTS OR  Transferable Ruger Mini-14 Machine Gun For Sale

    I have for sale a transferable Ruger Mini-14 machine gun. This appears to be a Pearl Manufacturing conversion. It is still lawful for an Oregon resident to purchase transferable Class 3 rifles. For how long, who knows? This rifle is the original 180 series and was also made in 1976 and bears...
  14. B

    Lc 84-85 Machine Gun Rounds.

    I was at a swap meet and this guy was selling some cool looking machine gun ammo (Used just shells but attached) . I purchased it and all these people liked them and started to offer me money for them. Are they good?
  15. clearconscience

    10mm MP5 sub machine gun stolen from FBI vehicle

    Someone got a heck of a theft present. Holy F But it's citizens that can't be trusted with weapons. How many people will be killed with that weapon?! FBI sub-machine gun stolen from California agent's car FBI sub-machine gun stolen from California agent's car
  16. CountryGent

    American 180 Submachine-gun?

    In recent years I've got increasingly into NFA firearms and have a decent stamp collection going. I've toyed with the idea of getting into a machine-gun, but haven't taken the plunge. The pragmatic side of me (or cost-conscious, er, cheap, if you wish) has a hard time justifying said at...