Source for A1 stripped uppers and 1:7 A1 profile FSB barrels?

[usmcchet9296]

Regarding projectile weight(s) and barrel twist ... I'll leave this here (you may have to actually cut and paste the entire link).

Hope it helps: ammo-oracle.razoreye.net

If I was building a .223 bolt gun I wanted to shoot at distance I would definitely got for 1/7 as I could shoot the heavier 77 and 80 grain bullets and also have a greater OOL than the spec for a AR rifle

William is right though
for a battle rifle I would want a 1/7 but for Joe average range guy who wanted to build a pencil barrel, insert not overly accurate when compared to a dedicated precision gun, a 1/9 might just be the twist rate he/she wants

[GRA556]

I currently have 4 pencil barrels; 2 with 1-8" and 2 with 1-7". Although I haven't fired any MK262 77 grain rounds yet I've had no problems with anything yet between the two.

[usmcchet9296]

I said in my initial post
"Here is a 1/9 twist chrome lined barrel
personally I think 1/9 is better for a range rifle
1/7 you are limited to 62+ grain bullets
1/9 you can shoot the more common 55 to 75 grain bullets "

while its doubtful even with 55 grain bullets in a 1/7 twist rifle a 1/9 personally would be a better option
I did not say without a doubt 1/9 is better but IMHO as a range gun and with the delton barrel I offered another, not better or worse, option
buy what you want
I have a M16A4 clone with a 1/9 barrel it shoots just fine for me and my son
that being said my information wasn't incorrect and this is my last response regarding this
I don't want to said track this Thread as I too will be buying parts to build a retro AR too and this information is good for everyone

[GRA556]

Right ... I just put that link in here so folks can have at least one source of good reference if they have nothing else. It's long reading but good reading and I have no reason to suspect the data is wrong.

[colt191145lover]

I said in my initial post
"Here is a 1/9 twist chrome lined barrel
personally I think 1/9 is better for a range rifle
1/7 you are limited to 62+ grain bullets
1/9 you can shoot the more common 55 to 75 grain bullets "

while its doubtful even with 55 grain bullets in a 1/7 twist rifle a 1/9 personally would be a better option
I did not say without a doubt 1/9 is better but IMHO as a range gun and with the delton barrel I offered another, not better or worse, option
buy what you want
I have a M16A4 clone with a 1/9 barrel it shoots just fine for me and my son
that being said my information wasn't incorrect and this is my last response regarding this
I don't want to said track this Thread as I too will be buying parts to build a retro AR too and this information is good for everyone

This is American and everyone has there own opinion and can do what they like, and I love it.
Unfortunately the tone being set here is really pushing to get quality treads like this closed.
Iraqgunz is a highly respected SME in his field who has forgotten more of this stuff than we will ever know. I have learned a ton from him!
I hope everyone cant take a deep breath and just chill out so we can all have a good time and learn.
Rant over.

[Iraqgunz]

A. No one disrespected you.

B. Your information is factually incorrect regardless of what you think. Why the military chose what it did makes no difference at this point because it has been the MIL STD for over 30 years.

Im not going to into a pissing match about this but I will say this
the only reason the military went with the 1/7 was because the rounds the military used didn't work well under extreme cold with a faster twist and I believe also tracer rounds stabilized better with 1/7
1/8 would be the ideal but 1/9 will work better with common 55, 62, and 69 grain bullets
I see you are a master armorer and prior service so I will show you respect you didn't show me and leave it at that
but I have offered in my prior post another option besides 1/7 and 1/12 twist barrels

[LDB]

I don't know if they'd have what you need but Battle Rifle Company is a great 100% veterans business that does top shelf work with top quality parts.

[GRA556]

Unless my information received previously is wrong but I've been told that Battle Rifle Company makes the retro barrels for Brownells ... (???)

[usmcchet9296]

Unless my information received previously is wrong but I've been told that Battle Rifle Company makes the retro barrels for Brownells ... (???)

Could be Nodak makes the uppers and lowers

[GRA556]

Could be Nodak makes the uppers and lowers

Yes that is my understanding also regarding the retro receivers.