AR-15 Build
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Old 02-15-2011, 03:06 AM   #1
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Default AR-15 Build

I blame you guys mostly. I'd look at a picture of a sexy AR and keep repeating to myself, "Thats nice, but I don't need one." Well, I could only take so much. Thanks a lot guys...

I would like to hope I have the skills to build one from scratch, so thats what I'm doing. I figure if I do the research and do it myself, when something goes wrong I won't need a gunsmith on speed dial.

Starting with an M&P 15 lower to support the locals. DPMS lower kit and Daniel Defense upper are the first things to show up in the mail. A lot of the items I want are back-ordered so this will take longer than expected. Good thing I have time.

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Old 02-15-2011, 03:47 AM   #2
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So my first problem has already arisen. I can't find a Daniel Defense barrel with a 1:9 twist, only 1:7. I've read that a 1:9 is desirable, but will I make a bad decision getting a 1:7? FYI, I won't be shooting any tracer rounds or going full auto.

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Old 02-15-2011, 04:01 AM   #3
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I can't really help you but that is a very nice Lower. I am doing a build for the Mrs. She doesn't know yet.

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Old 02-15-2011, 04:07 AM   #4
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So my first problem has already arisen. I can't find a Daniel Defense barrel with a 1:9 twist, only 1:7. I've read that a 1:9 is desirable, but will I make a bad decision getting a 1:7? FYI, I won't be shooting any tracer rounds or going full auto.
1:7 might be problematic with lower grain, less than 55, varmint rounds...what barrel length are you thinking of? What types of shooting are you planning on...plinking, longer range 200+, coyotes?
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Old 02-15-2011, 04:19 AM   #5
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1:7 might be problematic with lower grain, less than 55, varmint rounds...what barrel length are you thinking of? What types of shooting are you planning on...plinking, longer range 200+, coyotes?
I was thinking between plinking and yotes, no long range for this one.
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Old 02-15-2011, 04:58 AM   #6
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I was thinking between plinking and yotes, no long range for this one.
1:9 would be the most versatile for those situations giving you acceptable performance across a range of bullet weights from 40-69ish. Anything lighter or heavier may have self-destruct or understabilization issues, respectively. A 1:7 will help on the heavy end of the scale but would most likely take the 40gr option away, either will handle the M193 55gr standard.
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Old 02-15-2011, 06:46 PM   #7
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Step one complete.

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Old 02-15-2011, 06:49 PM   #8
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The qquality of the machining on the M&P's is awesome. Why don't you check out some of the other barrel makers other than DD? There are a ton of options out there.

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Old 02-15-2011, 07:47 PM   #9
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The qquality of the machining on the M&P's is awesome. Why don't you check out some of the other barrel makers other than DD? There are a ton of options out there.
I'm open to suggestions. I was just going with DD because of the quality. I can't own one of their rifles, but I can build one as long as the lower is MA compliant.
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Old 02-15-2011, 08:23 PM   #10
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I am pretty sure J and T sells individual barrels. They only use Wilson Combat and ER Shaw. Nice stuff at an inexpensive price. You can download their catalog online

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