How Effective is a 7.5 Inch AR-15?

5.56 is effective because at 2500+ FPS it expands and often fragments/tumbles. It’s leaving your 7” barrel at 2175 so none of that happens despite what you say. You’re doing the equivalent of carrying FMJ RN in a carry 9. I don’t want to be shot with it but there are better choices. Gain 4in in your barrel and you’re consistently good. Why not? If you must have 7” then go 300 Black.

lmao i just lost it when the dude said 'you can put it in your back pack and take it to church.' wtf!?!?! lol

AR pistol in 300BLK, enough said.

I dammmmn shooooolllllll want one

I think that a 5" 1911 with 22 TCM, will get the job done at those distances

Why not just do 300 blackout? More mass and designed for shorter barrel.

I used to ignore this channel because his name is too close to another utuber I watch and I figured he was trying to imitate that. I tuned in because the subject was important to me. I was wrong about this guy. I am not an expert, but I know a fair amount about AR’s – my favorite platform. He knows what he is talking about. Good presentation. Subscribed.

Isn't this what .300 blackout was made for?

"Um" maybe come prepared next time. Too much mumbling. This video could have been 3 minutes long

Debating a pistol build myself. I WANT an SBR, but we all know…
Would be for close range anyway, similar to my revolver and shotgun(minus slugs)

5.56 relies on fragmentation to do its damage. Fragmentation relies on velocity. XM193 and M855 will NOT reach fragmentation velocity out of a 7.5" bbl, and will only fragment out to 25yds out of a 10.5" bbl. There is specialty ammo available, like 77gr low velocity fragmenting rounds, but they're expensive…. A 7.5" bbl AR in 5.56 is basically a high velocity .22….. 7.62×39 is a much better round out of a 7.5" bbl..

Notice how I shoot my finger off because I want to look airsoft cool.

Where did you get the foldable buffer from and what is it called?

Effectiveness video to a gun accessory review lol geeze.

223 will go through soft vests like a knife through butter, especially at close range.

What advantage is this over a pistol caliber AR pistol other than the blinding muzzle flash and concussive report? lol
I couldn't imagine shooting a 7" 223/5.56 AR indoors, it would cause the shooter to become disoriented.
As Far as penetration versus a pistol caliber, I'd have to see the actual gel test data, but no way this is going to penetrate
a ballistic vest with the lowered velocity and stabilization, on par with a 22 mag maybe, and that won't penetrate a vest.
Personally I think a 9mm or 40 cal AR pistol would be a better choice if you're range standard is 50 yds. or less.
I have shot one of these short AR 15's in 223/556, it's just too much noise and flash to be practical.
One thing I will say, if you don't hit the assailant you will surely defan and blind them, and probably yourself without
protective gear..

Perfect for Jew hunting

i threw a magnified optic on my 7.5 and was getting hits out to 400 yards on 12 inch steel no problem. probably not effective as can be at that distance but def can lay down cover fire at that distance and bail.

I'd be a little concerned with removing the nylon strap on the arm brace as the Feds may view that as a modification which makes it an SBR. Just saying.

I would be careful if you concealed carry it. If it measures over 26 inches with everything fully extended it is no longer a pistol but only a firearm. While it is fine to conceal a pistol(if you qualify under state law) concealing any firearm that is not a pistol makes it an AOW which is an NFA weapon and illegal without proper paperwork.

Nicely done. I have a similar setup. Of all my "toys," this is my favorite to shoot. Reliable, hard-hitting, and easy to transport in a fix. I might add that one should ALWAYS wear hearing protection when firing this particular weapon. I fired my initial shots off my front porch (I live on a farm). The decibel level felt like my eardrums were punched with an icepick. I am a combat vet and never fired any small arms weapons that were as loud. When I first fired it at the range, I noticed that other shooters stopped and stared at me after I emptied my mag. Certainly the loudest bang on the range. I have numerous ARs and AKs but this one is my lap gun. Makes a perfect "Alamo" weapon.

What muzzle device do you have on that pistol?

Where did you purchase your folding cheek rest?

that's a good idea…never thought over toting my AR to church.

Regarding the lethality of 5.56 out of a 7.5" barrel, it's still going to be better than anything in a defensive pistol caliber – .380 up to .357 magnum.

Lol what? 5.56 out of 7.5" barrel is like hammering a nail with a screwdriver. Sure, it works, and it'll get the job done… but why not just use a hammer (300 blackout)?

I discredit your "effectivess". Wtf….just trolling

Can you spec out that AR you have. Specifically the upper, what handguard, barrel, and which Comp?

Like the AR….nice channel. Check me out.

I laughed when he said “take it to a church in a backpack”….lol someone already did and made the news before. Good video tho cool build

With the balastic advantage barrel did you put the upper togethe?r or did you buy a complete upper with it?

I don’t know about 25 yards I’m hitting 12 inch. Still consistently at 100 yards I will agree with you on self-defense distances . But I think your selling the 7 1/2 inch short . I was to before I built mine . & got some good rang time in with it . I’ve got a Cryhavac Break down barrel on it and it’ holds zero every time with the same folding stock you have . It fits in a 10 inch x 7 bag

please replace that angled foregrip with a handstop or with nothing at all. If you don't pay attention to your hand placement you will blast your finger right off

Active shooter in armor? Hip shots- crack that pelvis and they'll be in too much pain to do much of anything.

Is that Nick ?

"You can take it to church" lol

until i watched this video, I wasn't sure about selecting 10.5 inch for my build.

Seeing your fingers 1 inch from the muzzle convinced me. I'll stay safe

223 Varmint 45 grain HP should hit 2400 fps/576 fpe in the 7.5" barrel. Why not just go 300 blackout? It maxes in under 10".

Good post sir! Thanks

I'm a bigger fan of the 10.5" but I have a 7.5" and I like it. As far as pistol armour that'll blow right through it. I've killed alot of wild hogs with my 7.5" it worked as good as any other 223. It's not a super round from any barrel length but it'll get the job done. The cool thing about the 7.5" is it's a flamethrower, flash bang and gun all rolled into one. I think I'll sub. 👍🇺🇸

"It folds sp you can take it to church if you want to." Did you really just say that?

One false move and your finger is gone…..

Gaylord

You lost me with the tacticool left/right look! Nice pistol but come on man.

what a bad ass pistol build you have there man I love it

Right…. take it to a church in a bag…..

Quick question:
If a pistol like this is designed for <50m wouldn't a 9mm pistol like the Sig MPX be a better option?
I dont know much about short barrel ballistics

What sling do you use?

What's your OAL?