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Getting ready to order some AR-10 lowers and am wondering what is the best bang for the buck.

Looking at 7075 billet lowers and am finding a big spread on price. All I am looking at are US made but range in price from $80 for an AMT to $140 for a Pacific Defense and everywhere in between.

What are your alls recommendations?


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I'd recommend whatever matches the upper you want to use. Don't assume they all fit, AR10 / AR308 receivers are not all the same pattern like AR15. Finding the lowest price somewhere doesn't help much if it doesn't fit your upper.

Personally, I prefer my large frame uppers and lowers to come from the same manufacturer so they fit correctly.

Last edited by Yondering; 02/08/19.
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It will be a DPMS pattern and the company of the upper I am considering, Eisenech Arms, doesn't make lowers.

Last edited by 10gaugemag; 02/08/19.

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I've run into a couple "DPMS pattern" uppers that don't fit other brands of "DPMS pattern" lowers. Just sayin...

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Originally Posted by Yondering
I'd recommend whatever matches the upper you want to use. Don't assume they all fit, AR10 / AR308 receivers are not all the same pattern like AR15. Finding the lowest price somewhere doesn't help much if it doesn't fit your upper.

Personally, I prefer my large frame uppers and lowers to come from the same manufacturer so they fit correctly.


There seems to be less variance in the Armalite pattern uppers and lowers.

I generally avoid anything labeled DPMS....


You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

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Originally Posted by Yondering
I've run into a couple "DPMS pattern" uppers that don't fit other brands of "DPMS pattern" lowers. Just sayin...

Just going off of the recommendations of Eisenach Arms for their EA-30 upper.

Still looking for a good quality 80% lower if anybody has some recommendations. Wanting the best bang for my money.

Last edited by 10gaugemag; 02/09/19.

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An 80% lower is an 80% lower! The bang is how good you do your 20% part.


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Originally Posted by MontanaCreekHunter
An 80% lower is an 80% lower! The bang is how good you do your 20% part.


In a small frame AR that's true, perhaps not so much for the Large Frames with multiple patterns.


You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

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Originally Posted by antelope_sniper
Originally Posted by MontanaCreekHunter
An 80% lower is an 80% lower! The bang is how good you do your 20% part.


In a small frame AR that's true, perhaps not so much for the Large Frames with multiple patterns.


It still holds 100% True! You just need to match your upper and lower up on the AR10. It isn't rocket science, they are still Lego's.


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Originally Posted by MontanaCreekHunter
An 80% lower is an 80% lower! The bang is how good you do your 20% part.

So the cheapest are as good as the more expensive??


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Any reason you want an 80% other than the no numbers?

GoBallisticFirearms are very nice billet lowers 100%

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Originally Posted by 10gaugemag
Originally Posted by MontanaCreekHunter
An 80% lower is an 80% lower! The bang is how good you do your 20% part.

So the cheapest are as good as the more expensive??


Yes as far as I am concerned they are. But I will say this My buddy bought the 5D Tactical jig and it is the best I have seen. I had the 80% Arms jig, it was good but not as good as the 5D Tactical. My suggestion to anyone wanting a first class finished product is to either use Marginless Drill bits on your holes or a step reamer. I have used both Marginless and step reamers. The holes are perfect either way. I hope this helps you out.

Unless you just want an unknown lower, I would personally just buy a matcher set from Seekins.



Last edited by MontanaCreekHunter; 02/09/19.

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Scratch the Seekins. I thought they had the upper and lower only. They only have the Upper, Lower, and hand guard it looks like. It is expensive, you are looking for cheaper.


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The GoBallisticsfirearms is $109 for the lower and no messing with it. Might be a good road for you to go down. Unless you want no numbers


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Originally Posted by MontanaCreekHunter
Originally Posted by 10gaugemag
Originally Posted by MontanaCreekHunter
An 80% lower is an 80% lower! The bang is how good you do your 20% part.

So the cheapest are as good as the more expensive??


Yes as far as I am concerned they are. But I will say this My buddy bought the 5D Tactical jig and it is the best I have seen. I had the 80% Arms jig, it was good but not as good as the 5D Tactical. My suggestion to anyone wanting a first class finished product is to either use Marginless Drill bits on your holes or a step reamer. I have used both Marginless and step reamers. The holes are perfect either way. I hope this helps you out.

Unless you just want an unknown lower, I would personally just buy a matcher set from Seekins.



Looking at the Modulus jig.


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I'll check it out, haven't seen it.


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A lot like the 5D. Probably not a nickles difference.


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Originally Posted by 10gaugemag
Looking at the Modulus jig.


Looks like a copy of the 5D Tactical.


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Happy Birthday MontanaCreekHunter!


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Originally Posted by g5m
Happy Birthday MontanaCreekHunter!


Thank you!


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