Which barrel length is best for an AR-15? We perform the ultimate tests.

18" and especially 20" for control was expected. Very let down.
-gigaChad SPRboi

For shorter rifles, a 300blk would be better for close range engagement under 150-200yds.. if youd be CQB but might need to stretch a few shots here and there out to 3,400yds.. a 556/223 would be optimal in a 12.5-14.5" barrel.

Great. Very nice. Now do this again but chambered in 7.62×39.

Reminds me of the caper debate… Them: "Which is best?" Me: "For what specific purpose?"

Has someone been watching call of duty cursed gun videos?😂

Man. Why leave out the 20"+ rifle length barrels? 20" cracks the 3000 fps barrier. Longer range, accuracy, energy on target. I know the current meta has more focus on CQB/home/personal defense not optimal for long barrels, but they've carried us through since Vietnam. Run a 24", and you're comfortably in small game and long range target territory. But hey. We like tactical more than practical. I have everything from a 10.5", 12", 14.5", 16", 20" to a 24", with shorter in .300 BLK, and a .458 SOCOM, and an 18" 6.5 Grendel. My preferred method is to pick the purpose, and then optimize caliber to length, and make sacrifices from the optimal point if I need to shorten it for muzzle devices/suppressors, overall length requirements, or cool factor. Like, I needed a build to fit in a very tiny bag. Why sacrifice 400-500fps to nerf a 5.56 when I can optimize a 9" barrel for .300 BLK subs? Conversely, why bother with .300 BLK at 16" for legal reasons, when a 5.56 loves the length?

One thing I really would of liked to see in the data is how much of an fps increase you would get from a standard 4 inch supressor, if any at all.

20" like God intended it to be

No 18”? Big sad

Stopped watching after they didn’t say they’re testing 26” polyforged printed super titaniluminum carbon barrel

The size in the thumbnail of 5.5” is a perfectly acceptable size that’s served me well for years.

apparently you very much need the guy on video, who can come up with "snoring dormant insurgents", "eating snickers institute", "Dora Snortz institute" etc…

7:53 fun fact, if you go down to a 7.5 inch barrel you go down to 22 magnum velocities.

(Like barely over 2k fps with 55 grain m193)

Thanks for proving once again shorter barrels shouldn’t be scarier as people want you to think

do the same test but with 300 black out, super and subs

Since when has Mike had arm tats

I'm a big fan of 11.5/16, but honestly I'd just prefer to go 300BLK with a 5"-8".

It’s a shame that Charlie can only film when he is out on day release 🫡 I was waiting for him to whip out the 30”

ily2 dadthumb

Now do the same test in the “mannlier” harder hitting and more wind resistant .308 and/or 7.62x51mm cartridge. I purchased a Socom 16 CQB for it’s ability of operating at all ranges. Short, mid, to long ranges. I know a 20+ is more desirable at distances over 300m.

Everyone knows that the correct barrel length is 20" and your comments section will never shut up about that because of the 'tism.

this could not have come out at a more perfect time, i was just wondering what should be my first rifle's length.

would you consider doing a video like this for 7.62 aks or 300bk ar's?

Interesting stuff.
– A canuck with an 18.5" X95 and 20" Tavor 7 because politicians who don't use guns decided the AR15/10 are only made to kill people.
My sadness is immeasurable 😢

should of tested with fatter ammo as well to see if the difference is similar

Be interesting to see a comparison of the different barrel lengths in your wall test. (With the multiple walls to see if there's a difference between the penetration of the different barrel lengths–also if you could try different ammo, like ball, green-tip, and HP.)

5" might be small but it's mighty… Oh we're talking about rifle barrels, shit whoops

Great video would like to see the difference in bullet weight between the 10.3 and 16 with 77 gran.

its about girth

I think this is something a lot of people have made a video on, but we wanna hear it from you. Does a suppressor make a difference? If so how much? And what suppressors do you recommend for the various calibers?

You should do a suppressor muzzle velocity point of impact shift test. I think I wanna 10.3 with a 6 to 36 magnification now. I have an 11.85 and 16 PWS uppers and they are great, Piston Gang

Wonder what the longest barrel you can buy is (for memes purely)

I personally like my 14.5” Grendel. It’s a bit lighter than a 16”, which is what I’m looking for. I could follow that logic further but Grendel shines out of longer barrels with more space to burn the straggling powder that wasn’t already burned near the chamber. It’s a great round for Arizona, shoots quite far and very accurately out of my gun, takes deer pretty good too

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16” all day, 12.5” is as short as I’ll go. I also have the 14.5” but I rarely use it anymore. 16” just feels perfect to me.

Your so called test means nothing due to the fact a person is pulling trigger and the rifle is not solid mounted😅

No 20 in? Guess there not Giga Chads?🤷‍♂️

i run 7.62 with 16" barrel

I run a 16 I love it

AR15 pattern to Bullpup barrel length conversions at equal overall system length

13.7‘ -> 20‘
10.3‘ -> 16‘

Now you might have really good reasons not to like bullpups, manual of arms, available options, reliability, price, …

But on 5.56 ballistics @ system length they are running circles around the AR based systems

Hi what is your fav rifle? And what is better hk416 or bcm mcmr

Shooting at night changes everything as well. The flash that interferes with your vision and what it looks like down range. The difference between 10.3 and 14.5 is a deal breaker. 14.5 to 16.5 in those conditions doesnt change in any noticeable way.

I have a 5in SBR just to show this same thing. The 5in is a Douglas blank I screwed up in gunsmithing school. Now I keep it to get rid of myths. It's just as accurate as a 16in and will still penetrate a full block of gel.
Have a 7.5in galil ace sbr too.

Micah’s brim is definitely irritating. Get a scotch bright can and friggin boot band that sh** 😂

I'd love to see you do this with 300blk