How do you choose parts to build an AR-15?

flashgor_99

New Member
Aug 10, 2015
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I've looked through a number of videos on AR-15 builds and they are pretty thorough in the how-to. But, how do you choose the different components? Quality vs. price? The only thing I come up with immediately, is that if the part costs more, it must be better quality. That only works if you have a bottomless pit of money. Any general advice from the community?
 

Dawico

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Oct 15, 2009
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Lampasas, Texas
It all depends on where you want to end up with the rifle. Obviously budget builds are different than high end builds, and the purpose makes a big difference too. If you want a long range rifle, CQB rifle, or a "do all" rifle the shopping is different. In the end brand preference plays a big part too.
 

robertc1024

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Jan 22, 2013
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San Marcos
For what I'm doing, I chose specific, critical parts for the build (upper, lower, barrel, bolt) and get the other stuff as cheaply as possible - to go into a truck gun. I figure I can upgrade stuff like a charging handle, BCG etc. later if I want.
 
Jan 5, 2012
18,610
113
HK
After I did the research. AR parts were chosen for the type of metal they were made of. Both alloy and the type of steel used to build the barrel. That was the first qualification.


The second was the testing that had been done. Such things as magnetic particle inspection, etc.


Third, was twist rate, barrel length, and how pretty the makers stamp was on the side of the receiver.
 

Charlie

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Mar 19, 2008
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Kerr County
what ever was on sale
Agree and add to that for ya'. Whatever was on sale as long as it isn't junk. And as said earlier, what you're going to do with it makes a lot of difference; target shooting, hunting, truck gun, etc.

I'm in the process of building an AR "truck" pistol. I'll get a good bolt & carrier, barrel, and trigger. Other parts won't be that critical to me.
 

Shady

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Aug 24, 2013
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I cant out shoot even a crappy AR :) so no need to waste money on the good stuff.
 

gundoc

New Member
Mar 21, 2014
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New Braunfels
Purpose. What is it? Figure that out and a configuration is easier to nail down. I prefer to get receivers and BCG from a single source. That way you have one set of tolerance on the 3 most important parts. Helps with reliability. Stay away from CavArms amd Mako. Their parts suck. If you have any other questions shoot me a message. I'm glad to help.

Sent from my SGH-M919 using Tapatalk
 

Shotgun Jeremy

Spelling Bee Champeon
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Jul 8, 2012
11,260
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Central Texas
d'Armi_beretta and I are wanting to do AR builds together. I think it's important that at least the upper, lower, gas block, and barrel all come from the same place, so I'll probably look and see who has what to offer. From there, it's really just going to be what I think feels good. I'll want a trigger that breaks nice. I'll want a stock that fits nice, and so on.
 

outdare

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Jul 24, 2009
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Houston
d'Armi_beretta and I are wanting to do AR builds together. I think it's important that at least the upper, lower, gas block, and barrel all come from the same place, so I'll probably look and see who has what to offer. From there, it's really just going to be what I think feels good. I'll want a trigger that breaks nice. I'll want a stock that fits nice, and so on.
Curious why all from the same place? I've built a couple of AR'S and would suggest you build a cheap one first to get a idea how to do the build. Second I found that the price for a partially assembled upper is worth the 20 bucks more.
 

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