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MoJo: Thanks.

SIA

Another question to anyone:

I would think the M16 would be preferable to the M4 due to the M16's longer barrel.
The longer the barrel, the more easy it is to be accurate.

Are the M4's preferred (although a shorter barrel) due to house-clearing convenience,
or is it because the M4's are newer, and hence have less mechanical problems?

SIA

Kythas:
What's the deal on the full length M16 vs. the M4?

I always thought that our ground troops, both Army and devil dogs, used the M16 (long one)
and that the M4 (shorter version) was for SEALS and other special forces.

Did all our forces switch to the shorter M4's when we went to Iraq in 1991? Or when?

SIA

Mike1951:
Since a special federal license is required to own a machine gun, I wasn't sure if
the cops have some special authority to use one.

As far as "Class 3" firearms, could you define that for those of us who don't know
what that includes? Thanks.

SIA

Here's something I've wondered about for while, and I thought I would toss it out to the crowd.

Many police cars have shotguns that you can see in the front passenger area of the car.

Some officers have long weapons in the trunk, in case something really bad goes down.

Are police officers allowed to use fully automatic M4's or M16's?

Also, are these weapons fully automatic, or do they just have single shot and 3 round burst
modes?

It seems I've read that some PD's have bought AR-15's, which are semi-automatic.

Is there a line drawn that SWAT teams can use full auto, but the beat officers must use semi-auto
long guns?