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Posted: 1/25/2020 8:38:30 PM EDT
[#1]
Well, got some stag AR10 uppers, will post up if it worked or not when they come in.
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Posted: 1/26/2020 1:35:18 AM EDT
[#2]
Most of the issues in Armalite cut receiver fit are cosmetic and tolerance stacking. Guns with billet receivers tend to be made in matched sets and the tolerances are so tight so they don't fit with out having to mod the parts. Other things end up being things not lining up cosmetically.
Quoted:
Anybody done any builds off a UIC10 lower? I know it's a SR25 pattern but I've heard of fit issues even between SR25 patter upper/lowers. Thanks in advance. |
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Posted: 1/30/2020 11:43:42 PM EDT
[#3]
Got the stag uppers in today. I think they are the same as the Matrix/Diamondback.
SR25/Armalite cut but DPMS type 2 (high) height and DPMS threading. Dropped in on the UIC10 fine. The only mismatch is the flat portion on the side is 1/8" or difference in width, I'm not OCD and can live with it. Quote HistoryQuoted:
Most of the issues in Armalite cut receiver fit are cosmetic and tolerance stacking. Guns with billet receivers tend to be made in matched sets and the tolerances are so tight so they don't fit with out having to mod the parts. Other things end up being things not lining up cosmetically. Quote HistoryQuoted:
Most of the issues in Armalite cut receiver fit are cosmetic and tolerance stacking. Guns with billet receivers tend to be made in matched sets and the tolerances are so tight so they don't fit with out having to mod the parts. Other things end up being things not lining up cosmetically. Quoted:
Anybody done any builds off a UIC10 lower? I know it's a SR25 pattern but I've heard of fit issues even between SR25 patter upper/lowers. Thanks in advance. |
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Posted: 1/31/2020 12:07:48 PM EDT
[#4]
Quote HistoryQuoted:
Got the stag uppers in today. I think they are the same as the Matrix/Diamondback. SR25/Armalite cut but DPMS type 2 (high) height and DPMS threading. Dropped in on the UIC10 fine. The only mismatch is the flat portion on the side is 1/8" or difference in width, I'm not OCD and can live with it. And looking down the barrel nut end on the upper, to the lowers RE , did that appear to be reasonably centered ? FWIW,,, DPMS pattern wise... that whole high tang v. low tang thing ( on DPMS pattern ) really shows up when looking down to see if everything is centered in the lower. Thank you ahead of time. |
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Posted: 1/31/2020 2:35:00 PM EDT
[#5]
I have wanted to know if the ruger sr762/matrix upper would fit on the ADM lower and had always gotten "sr25 pattern" as a generic answer. Thanks for the info and taking on the trial.
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Posted: 2/1/2020 12:19:14 AM EDT
[#6]
So far in my experience the tolerance stacking among SR-25 style can be a real pain in the ass. No idea why the industry can't just get behind one standard, but whatever...
I am in a similar situation as you, except I am currently wondering if a ADM UIC-10 upper will fit nicely on my LMT MARS lower. I has turned out to be a huge challenge to find something that matches up and is in spec. Hopefully more people chime in here. I might just buy a UIC-10 set and ditch the LMT lower, but I also want to hear more feedback form people with them. |
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Posted: 2/3/2020 4:19:07 PM EDT
[#7]
I'll update when I have checked with the pins
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Posted: 2/6/2020 1:30:42 AM EDT
[#8]
Well, slight hiccup.
The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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Posted: 2/6/2020 3:20:53 AM EDT
[#9]
True SR pattern guns use .281 pins vs .278 something for DPMS / Armalite.
Quote HistoryQuoted:
Well, slight hiccup. The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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Posted: 2/6/2020 3:21:41 AM EDT
[#10]
True SR pattern guns use .281 pins vs .278 something for DPMS / Armalite.
Quote HistoryQuoted:
Well, slight hiccup. The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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Posted: 2/6/2020 12:24:28 PM EDT
[#11]
The ADM receiver uses .28 and the Stag uses .2770
Wondering if I should use Stag pins and accept a bit of wobble or open up the Stag receiver .003" ETA: Bought the Stag pins for ten bucks, waiting on those to come in and see how it works before I try out my questionable metal work skills. ADM loves to make the pins for their lowers an extremely tight fit. Quote HistoryQuoted:
True SR pattern guns use .281 pins vs .278 something for DPMS / Armalite. Quote HistoryQuoted:
True SR pattern guns use .281 pins vs .278 something for DPMS / Armalite. Quoted:
Well, slight hiccup. The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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Posted: 2/17/2020 4:36:35 PM EDT
[#12]
Got my Stag pins in and the pivot pin seems good, about the same as an newish issued M4 in terms of fit, however the takedown/rear pin from Stag is about 1/4" too long. Will contact ADM tomorrow to see if I can get some pins from them.
Looks like I will have to file out the rear lug of the Stag uppers a bit. Quote HistoryQuoted:
The ADM receiver uses .28 and the Stag uses .2770 Wondering if I should use Stag pins and accept a bit of wobble or open up the Stag receiver .003" ETA: Bought the Stag pins for ten bucks, waiting on those to come in and see how it works before I try out my questionable metal work skills. ADM loves to make the pins for their lowers an extremely tight fit. Quote HistoryQuoted:
The ADM receiver uses .28 and the Stag uses .2770 Wondering if I should use Stag pins and accept a bit of wobble or open up the Stag receiver .003" ETA: Bought the Stag pins for ten bucks, waiting on those to come in and see how it works before I try out my questionable metal work skills. ADM loves to make the pins for their lowers an extremely tight fit. Quoted:
True SR pattern guns use .281 pins vs .278 something for DPMS / Armalite. Quoted:
Well, slight hiccup. The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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Posted: 2/17/2020 9:21:48 PM EDT
[#13]
Quote HistoryQuoted:
Well, slight hiccup. The UIC-10 came with a front takedown pin and that seems a hair too big for the Stag upper. Visually it seems like the hole diameters are the same, but that thing won't go in. |
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