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1/10/2014 7:18:21 AM EDT
Hey everyone! I wanted your opinions on my first AR-15 build. I've stumbled across some information that has me worried.

Here is what I've ordered so far (trying to do it right the first time).


Lower: http://www.joeboboutfitters.com/Spike_s_Tactical_Lower_Multi_Forged_Bullet_p/sp-stls012.htm
LBK: http://palmettostatearmory.com/index.php/moe-lower-build-kit.html

I've order a nice set of brass punches, pin holders, hammer, and vise block as well.

My concern is with the LBK. I thought I had done my research correctly, but I've came across some information that has me worried.

It's to my understanding that LBK I ordered is coming with a 6061 tube instead of a 7075 tube. Which is not true "mil-spec". My question is: Did I get a good deal on this kit (even if I decide to order a true mil-spec tube)?

I'm only using this rifle for home defense / every now and then shooting at the range.
1/10/2014 7:21:22 AM EDT
[#1]
You'll never have a problem with that tube. It'll be fine.
1/10/2014 7:28:52 AM EDT
[#2]
Thank you for the quick response. Overall, do you feel this would be a reliable build for the money? I plan on going with a Spikes Upper (preassembled).
1/10/2014 8:57:07 AM EDT
[#3]
Your good.  I bought the same LBK for my wife's build.  Its a solid option.  You bought it cause its cheap.  If you want a 7075 AIM has just the Spikes tube on there website.
1/10/2014 9:51:18 AM EDT
[#4]
6061 is not gonna shit out on you. 7075 is nice to have, but it's overkill as far as strength goes for 95 percent of shooters.
1/10/2014 1:15:37 PM EDT
[#5]
I feel a lot better about my purchase. Thank you so much for the replies. That's the beauty of the AR-15, you can always change out parts if you don't like them :)
1/10/2014 1:17:07 PM EDT
[#6]
All good.  Because the tube doesn't really handle much for what I consider a "shock" load (it takes the load rather gradually with the spring) it doesn't really need the strength of the 7075.  The 6061 allows it to be welded, something 7075 does not.  Just makes the processing easier, and therefor less expensive.  If you can wear it out you need far more than a basic stick anyway.  Shoot, enjoy, don't sweat it.
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