I was going through some of the older posts in this thread, and there seem to be some misconceptions regarding use of 5.56mm for CQC.
First off, take a look at how 5.56mm works.
It is essentially .22 cal round traveling with an insane velocity, so it would just pass through soft tissue, making a small hole through a person, not enough to kill him, but cause collateral damage in case of a hostage situation.. If thats what you're thinking you're wrong.
If it were so, militaries would never have adopted it. 5.56 is designed to cause damage by fragmentation in soft tissue. When it hits a target at speeds of over 2600 fps, it fragments, due to encountering resistance. It has to do with ballistics, look it up if interested.. Think of it as a tiny frag grenade going off inside a person's body. The exit wounds at caused by fragments as well, but these are low velocity ones, and wouldn't cause collateral damage.
I've read that it loses effectiveness as bullet's velocity decreases. Hence, its not suitable for long range. 55gr 5.56 ammo out of an 11" barrel varies between 2600-2700 fps, so it'll reliably fragment out to say 70-80m. It won't cause collateral damage.
My point is, NSG keeping the MP5 in service in any capacity is a no brainer, when they can use AR-15s with 10" or 11" uppers. It would not be a major increase in size either, compared to MP5 A5 which has an 8.9" barrel.
CT units world around are not stupid to have ditched MP5 in favor of AR SBRs.
That being said, even amreeki army is going for an SMG (B&T APC-9K), for some reason..
Just my 2 paise..
@rkhanna @abingdonboy @Gessler @COLDHEARTED AVIATOR