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Since you didnt give an option of .308 for a pistol Ill add it.
I did the ar pistol in a few calibers and now comes the 308 DSA FAL pistol...
It fits as it has a carbine forward handguards..
I plan to build a .308 Winchester pistol at some point (might be this year).
I always wanted a mares leg as in wanted dead or alive.. Is that what you mean with the winchester 308?
The only time in that time period where handguns and shoulder arms had the same cartridge was back in the day, when the cowboys had one cartridge for both (e.g. .44-40).
The only AR pistol that makes sense is a 300 blackout with a barrel 9 inch and over, as the cartridge is designed to burn all its powder in a 9 inch barrel. Pistol caliber carbines are stupid IMO, as they weigh as much as rifle caliber carbines, but have (way) less power. Rifle cal pistols lose way too much velocity, which takes the point out of it. There ain't no such thing as a free lunch. Give up barrel length, lose power. When you consider bullet weight, a .223 in 55 grain out of a 7 inch barrel will not have much more energy on target than a comon 9 mm out of the average pistol barrel. So, what's the point?
The only AR pistol that makes sense is a 300 blackout with a barrel 9 inch and over, as the cartridge is designed to burn all its powder in a 9 inch barrel.
If you suppress that weapon you may as well be firing .22 subsonic so wtf is the point of that?
First, wat?
Second, anyone who want's to use 5.56 and have it be useful should understands 10.3" is the minimum barrel length to still keep slaying bodies.
But I am interested why suppressing 5.56 would make it the same as .22 subsonic, go on.
In order to get full suppression you need to get 5.56 under the speed of sound (1,100 fps) or you will hear the sonic boom when the bullet breaks the sound barrier (the "crack" of the shot). At 1,100 fps a 5.56 round is basically a subsonic .22.
You disagree with this?
Rgr. Down loading 5.56 to subsonic speeds. I agree with this. However, suppressing a 5.56 out of a 10" barrel is still very much hear comfortable, so down loading to useless speeds is only useful if you are the biggest of ninja retards.
so...
I have to go to sleep, the wife is waiting...
And I'm not nearly drunk enough to keep going down this rabbit hole with you.
Well 9mm is still useful when run subsonic and at 147gr can be damn effective: 1,000 fps for 147 gr is a hot load, if you know what I mean.
My wife says she IS important shit to do.
M193 cruises through a 10.5" at ~2600-2700 fps. 30 rounds of that will do way more damage then 30 rounds of any 9mm load you can push through a rifle barrel, even if it is quieter.
The Thompson M1A1 sprayed some pistol round lead pretty effectively during WWII