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9/11/2014 12:25:51 AM EDT
Whats the best barrel length for building a pistol? I just bought a Jig and Lower from www.modulusarms.com to build a pistol. Also, whats the best upper for the money? I don't have a fortune to spend but I want a quality upper.
9/11/2014 12:52:22 AM EDT
[#1]
I've used 7.5, 10.5 and 12. I prefer the 12. This one in fact.
http://palmettostatearmory.com/index.php/psa-chf-12-5-56mm-1-7-a2-profile-upper.html
9/11/2014 12:55:35 AM EDT
[#2]
7-8" for fun. With some careful ammo considerations it can still be an effective close range defensive pistol.

10.3-12" for maximum ballistics.

I've used M&A parts and JSE surplus myself.
9/11/2014 2:52:31 AM EDT
[#3]
What caliber?

If 556/223 then 10.5"
If 300blk or 7.69x39 then 7.5-8"

IMO shorter barrels are like blonds.... they're just more fun.
9/11/2014 7:38:39 AM EDT
[#4]
For 223/556 I would say 10.5-12"

I have an 11.5 that functions very well on any ammo , I cannot say the same for the first ar pistol I had .

I will look at 300 blackout when the ammo prices come down and it becomes readily available
9/11/2014 9:44:29 AM EDT
[#5]
11.5
9/11/2014 9:47:00 AM EDT
[#6]
both my 7 and my 10.5 work great and do the job
9/11/2014 1:49:53 PM EDT
[#7]
I chose 10.5". Still has ok velocity and fairly flat trajectory. Fits and swings great inside a vehicle, which is where people spend a lot of time.

BCM looked into it and decided they wouldn't even bother with less than 11.5" because it just wasn't something that could be guaranteed (not enough "dwell time". That's important, because god knows they would sell a shiz ton of them if they made them.

I can't ever see doing a 7.5" with 5.56.

I suppose the "best" length for a AR pistol depends on what you're doing. In a state you can't open/conceal carry a long gun, maybe a 20" HB pistol is the best way to go.

The best AR upper for the money is the BCM blems or basic ones. They even come with a BCM auto BCG. That, plus unlike certain popular manufacturers on these forums, BCM doesn't get get 1/10 of their product back with issues.
9/11/2014 5:56:53 PM EDT
[#8]

Quote History
Quoted:

BCM looked into it and decided they wouldn't even bother with less than 11.5" because it just wasn't something that could be guaranteed (not enough "dwell time".

View Quote
Why BCM chose the 11.5" SBR over the 10.5"



Learn the constraints and limitations of a the most popular barrel lengths (7", 10.5" 11.5" and 12.5") and what your wants and needs are. If you consider all of that it will make it easy to determine which barrel length is the best choice for you.

 
9/12/2014 12:10:44 AM EDT
[#9]
That ^
9/12/2014 2:26:12 AM EDT
[#10]
Quoted:
Whats the best barrel length for building a pistol? I just bought a Jig and Lower from www.modulusarms.com to build a pistol. Also, whats the best upper for the money? I don't have a fortune to spend but I want a quality upper.
View Quote

Are you even allowed to have AR pistols in CA?
I really like my 10.5. I just bought a 7.5, it is awsome, but ballistically I know the 10.5 is better. When I look at 11.5 or 12 it just looks to damn long. There is a thresh hold where I would rather build a carbine than a pistol.
9/12/2014 2:41:15 PM EDT
[#11]
Quote History
Quoted:

Are you even allowed to have AR pistols in CA?
I really like my 10.5. I just bought a 7.5, it is awsome, but ballistically I know the 10.5 is better. When I look at 11.5 or 12 it just looks to damn long. There is a thresh hold where I would rather build a carbine than a pistol.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Whats the best barrel length for building a pistol? I just bought a Jig and Lower from www.modulusarms.com to build a pistol. Also, whats the best upper for the money? I don't have a fortune to spend but I want a quality upper.

Are you even allowed to have AR pistols in CA?
I really like my 10.5. I just bought a 7.5, it is awsome, but ballistically I know the 10.5 is better. When I look at 11.5 or 12 it just looks to damn long. There is a thresh hold where I would rather build a carbine than a pistol.


Superjet802 will not respond. He was banned for being a Modulus Arms shill.

Yes, AR pistols are legal in CA. A law was passed that will not allow you to buy them I think starting January 2015 in gun stores. I'm not certain on the date but there was a recent change in the law. After the law kicks in you can still legally make one from an 80% lower.
9/12/2014 3:01:30 PM EDT
[#12]
Quote History
Quoted:


Superjet802 will not respond. He was banned for being a Modulus Arms shill.

Yes, AR pistols are legal in CA. A law was passed that will not allow you to buy them I think starting January 2015 in gun stores. I'm not certain on the date but there was a recent change in the law. After the law kicks in you can still legally make one from an 80% lower.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Quoted:
Whats the best barrel length for building a pistol? I just bought a Jig and Lower from www.modulusarms.com to build a pistol. Also, whats the best upper for the money? I don't have a fortune to spend but I want a quality upper.

Are you even allowed to have AR pistols in CA?
I really like my 10.5. I just bought a 7.5, it is awsome, but ballistically I know the 10.5 is better. When I look at 11.5 or 12 it just looks to damn long. There is a thresh hold where I would rather build a carbine than a pistol.


Superjet802 will not respond. He was banned for being a Modulus Arms shill.

Yes, AR pistols are legal in CA. A law was passed that will not allow you to buy them I think starting January 2015 in gun stores. I'm not certain on the date but there was a recent change in the law. After the law kicks in you can still legally make one from an 80% lower.

Burn.

I can't ever see doing a 7.5" with 5.56.


Fun and portability. After building a 7" my other AR's have been completely ignored.
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