A machine gun is a firearm capable of firing more tha one round with a single pull (sic) of the trigger.
Fistful- an MP5 is a Sub (caliber) Machine Gun. It doesn't have a bipod etc, but is capable of Full Auto / burst fire. An assault rifle, by definition, is a select fire weapon.
A Browning Machine Gun, Caliber .50 HB M2 is a Heavy Machine Gun. It can be fired from a tripod, or a pintle mount etc.
The M240 B/G are MMG's. The list goes on, but the commonality is that they are all capable of firing more than one round with a single press of the trigger.
Interestingly, the first SMG, the Villa Perosa, was fired from a bipod.
If you re read the first post, Ms Moos stated that "..it's an M4, semi automatic rifle".
As stated, the M4 is capable of firing a 3 round burst- more than one shot with a single press of the machine gun. It is not a semi automatic gun.
Get arrested for possessing/ using a full auto gun and see what you are charged with.
Joab- As stated earlier, companies have a tendency to call what they make anything they want, though using "M4" may no longer be viable.
I was informed that one company is marketing an "M4A3" which is not an official designator, but rather an attempt by the company to market something that has a high CDI.
Marketing hype is just that.
Note that your comments are about an M4 "Type". Many years ago i found that "type" means a knock off, similar too but not the exact article.
Please look at my post above regarding NSN's. That's it folks- an M4 and an M4A1. They are the only carbines in the system. They are made only by Colt. Always have been.
You can polish a pile of fecal matter but in the end it isn't gold.
But hey, don't let me confuse theories with facts...
Sylvilaquez- You have hit upon a dilemma. At what point does a person look suspicious? At what point does taking pictures of a structure become a crime?
There are large signs posted on the Narrows Bridge stating "Photography Prohibited". What law forbids this?
Is it OK if i take pics from the Belt Parkway or Shore Road?
At what point do we make a common act a crime.
Remember that cops are there to do a multitude of tasks. No matter how efficiently that is done, theperception of the work may be greater than the work itself. All companies/ departments/ agencies have PR people to push forward a positive agenda.
My partner and i once got a complaint because we wouldn't permit tourists- in the company of a retired cop- to take a posed pic with them.
The biggest question is how do you stop someone from taking a picture of a cop while working?