If wanted to mount a bayo on an AR, what combination of barrel

>>34102805
20 rifle, 16 middy, 14.5 carbine.

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>>34102825
Yup

>>34103261
holy fuck, the A2 barrel really is as retarded as I heard...

>>34103296
No, you're retarded.
>barrel whip
>heat sink

>>34102825
Only the rifle length and carbine length will work right. Mid length is weird and the bayonet will sit on the barrel and rattle around.

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>>34106032
>barrel whip
>in a 20" or less barrel shooting 5.56
>heat sink
>on the part of the barrel least exposed to heat

Bravo government.

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>>34106102
Rifle length on a 20" barrel
Midlength on a 16"
Carbine on a 14.5"

>>34106121
Lets break it down how you're retarded.
>>34103296
>Retarded as I heard
So your experience with this barrel is auditory until this very thread where this is the first time you've ever seen the A2 barrel
>...
Newfag
>>34106121
>Complaining about anti whip measures
For better accuracy when putting multiple shots down range
>Heat sink
>Least exposed to heat
You don't know where the hottest point on this barrel will be since you've never even fired an A2, or held one if your previous post is to be taken into account.

Tl;Dr: Newfag tries to complain about a gun he's only heard about

>>34106170
>long range accuracy
Why are you using 5.56 for 500+ yard shooting?
>You don't know where the hottest point on this barrel will be since you've never even fired an A2
I'll take "knowledge of grade school thermodynamics and firearm function" for $300, Alex.

>>34103261
A1 master race

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A2 aesthetics though...

>>34108424
>A2 aesthetics
But that's not a thing.
A1 and A4 are aesthetic, the A2 is about as plebeian as you can get.

>>34106170
>>34106032
Dude the part that has the highest pressure is the thinnest, wtf.

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>>34109614
A2 best M16

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>>34109614
get the fuck out

>>34102805
I wanna build like a Vietnam era type M16/XM117(?) does anyone have a guide to like the different styles of lowers and uppers?

>>34106974
It doesn't need long range accuracy.
A whip doesn't just affect the weapon, it pulls the shooter as well.
>Less whip
>Less recoil
>More accuracy at all ranges
>Better for combat where you need to place multiple rounds as accurately as possible as fast as possible
As for your "Gradeschool dynamics"
You'd realize that the highest temperature would be on the ends of the gas tube due to the higher pressure, shocking how the heatsink is there.

Again, you're retarded, stop posting about a weapon you don't know anything about.

>>34112612
>Worst aesthetics
>Worst "improvements" of any revision of the M16

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>want to own a M16A1 look a like
>Have no experience building ARs, no access to required machinery and quite frankly would probably dick it up
>Find http://www.txmgo.com/index.php/shop/guns/product/101-semi-auto-m16a1-replica
Thoughts?

>>34114180
>required machinery
You don't have a $30 table vice, 2x4 and torque wrench?

>>34114180
Looks nice.
If you have the money burning a hole in your pocket why not buy one and let us know how it is.

>1:12 twist vs 1:9 twist
What exactly makes the two different
>>34114191
I live in an apartment, have a wrench and a 2x4 but no vice. Don't you need a milling machine or something of the sort anyways?
>>34114215
Will do.

>>34114180
>http://www.txmgo.com/index.php/shop/guns/product/101-semi-auto-m16a1-replica
Find a SP1 at a gun show

>>34114251
Twist rate determines the bullet weight stabilised. 1:12 will easily stabilise 55 gr. but you either need a faster twist like 1:9 or higher velocity to stabilise the new heavier bullets like 62 gr. No real need for 1:7 as that is made to stabilise the longer tracer rounds the mil. will sometimes use, although it does work well for the 80gr.+ bullets.
Unless doing an 80% reciever no actual machine tools are needed. ARs can be assembled with fairly cheap handtools. Cost me less than $100 to get a tool set to do complete tear down and assembly.

>>34112612
Correct

>>34114251
For an 80% lower you do (though a drill press is also acceptable with a jig and some elbow grease)

But if you just buy the lower pre made you're good to go.
A1/2 stocks don't need anything except a screwdriver to install (only adjustable ones do; I didn't know this until I helped a friend on his build)

As for the upper, you might be able to just get a pre-built one (if you don't like fun things) or, you can build it yourself.

A vice on the floor of you apartment with some weights stacked on top will work in a pinch.
And it's only around $30 in terms of cost.
I can't speak for bench blocks, but you will only need an upper bench block (are there different blocks fr the upper and lower?)

>>34110806
>barrel is thinnest where pressure is most!
>A2 .750
>A1 .625
The gas port is where the most pressure is numbnuts, and where heat builds up first. Do us a favor and break your AR.

>>34106974

God damn you're retarded
fuck off noguns

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>>34106032
>>34106121
You both are retarded

While it is a "swamped barrel" the heavy end is due to a mistake Sullivan and Stoner made in A2 improvement testing.

>Use lathe micrometer on barrel
>measure around gas port with FSB off
>micrometer dips when it hits near the port
>think bayonet use has bent the barrel downwards

Fast forwards after A2 comes out
>measure again and same thing on A2 gasport
>even though gave it extra meat
>turns out S&S forgot drill bits remove material
>steel has grains and has the tendency to rip fibers with it if drilled
>A2 "swamped barrel" has no other purpose.
>too late to change it though

Still to OP's question 20" and rifle is the only way

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Bayonets are based

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>>34115535
>if only one could have a bayonet and scope combo without worrying about unzeroing the rifle

>>34115539
Holy fuck that meme is ancient.
Kids now don't even know about ytmnd

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>>34114131
>the highest temperature would be on the ends of the gas tube due to the higher pressure,
>>34114388
>The gas port is where the most pressure is numbnuts, and where heat builds up first.
If the A2's thicker gas port area was worth anything more than fuckall, things like picrelated wouldn't be an issue. I challenge you to find reports of A1s going tits up because their gas ports got too hot anyways. The middle portion of the barrel will literally explode before some useless deadweight material up front saves the day. Stop defending retarded Marine decisions.

>>34114131
I forgot to address your barrel whip stupidity along with your general ignorance on why the gas port thickness is useless if everything leading up to it is markedly thinner.

Firstly, an AR has negligible recoil in general. Secondly, if you think the bit of additional thickness at the front end of the barrel is going to have any real impact on combat accuracy, you're likely one of those mouth-breathers who think chrome lined bores have any real practical accuracy degredation compared to bare steel. As with the barrel whip ""advantage"" the government profile AR15 offers, no infantryman is going to notice it. A SOCOM profile barrel will make a more profound difference in that area, anyways, because it's actually thicker where it matters. The only real impact adding more material at the gas port onwards does it make the rifle less balanced. And that is something even an average joe could notice, unlike your offered barrel whipping.

The A2's barrel profile was a mistake, and the sooner you come to terms with that, the better.