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2/7/2012 8:24:11 AM EDT
I am looking for an upper for my spikes lower that will fit tight without an accuwedge and the lines match up?? Any ideas? Thanks
2/7/2012 8:42:39 AM EDT
[#1]
Spike or Aero would do it. That's what I got on two sets that are tight without the wedge. However, I do believe over time it will get loose.
2/7/2012 9:13:06 AM EDT
[#2]
I would try a Spikes.
http://dsgarms.com/ProductInfo/SPKSFT50M4.aspx

The Aero set that I have fit drum tight to each other.

CMT upper on my Aero lower was a little loose.
It's very easy to tighten up. I took some 3/16" (varies) rubber sheeting and cut a pad for the rear lug (under the takedown pin)
Full service hardware stores sometimes have scrap rubber sheeting pieces for sale.
Cut with scissors or use a grommet punch of the correct diameter.

It's black, out of sight and doesn't carry the stigma of the orange thingie.



2/7/2012 3:47:28 PM EDT
[#3]
I've tried 2 Spike's uppers and both were a horrible fit expecially with the lines...i would think the areo would be the same.
2/7/2012 8:55:27 PM EDT
[#4]
Quoted:
i would think the areo would be the same.

Why ?
I just reported that my Aero had tight fitment where my CMT did not on the same lower.



2/7/2012 8:59:28 PM EDT
[#5]
I got a yhm upper on my spikes lower and couldnt be happier with the fit and finish.
2/7/2012 10:20:28 PM EDT
[#6]
Due to tolerance stacking it's almost impossible to say that brand "X" upper will fit brand "Y" lower without any slop. Unless you buy a matched set (and still there is no guarantee) it's impossible to know until you try them together.

Just curious but why does it matter anyway? It effects the rifle in no way other than annoying someone that has OCD.
2/8/2012 2:31:31 AM EDT
[#7]
There's no way to know without testing them. Not worth worrying about anyway

Posted Via AR15.Com Mobile
2/8/2012 2:40:17 AM EDT
[#8]
I wouldn't worry too much about slop, but my spikes upper has a bit of play on all my lowers.  RRA stuff usually is on the large side of being in spec so you might try one of their uppers.
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