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Thread: Opinions on Adam Arms Mid-length Piston Upper

  1. #31
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    Quote Originally Posted by The_Hammer_Man View Post
    I don't think "inaccurate" is quite the word to use.. inconsistent certainly describes them though.

    Just as a lark a friend of mine and I chronoed a bunch of different steel cased ammo from the "W" and "T" people.

    As much as 400 fps difference within the SAME box of ammo!

    Shades of golden bullet!

    ( and yes that inconsistency in loads contributes to crappy accuracy.)
    I have seen the same with the "T" brand having some large swings in velocity but I have a few same lot cases of Wolf 55gr Copper H/P which has been very consistent running in average of 2840pfs with a S/D of 28 which is not bad for Russian steel cased ammunition.

    Accuracy wise the groups with my current batch of Wolf mimics X193 in group size so at least with some lots of Russian steel case they were decently manufactured.

    Now I shoot a lot of Wolf during the course of a year and would buy what ever happened to be on sale and available but I have noticed a difference in accuracy and velocity consistency between the different styles of Wolf .223 and for the record I prefer the Wolf 55gr Copper (Not Bi-Metal) H/P's as it is the most consistent from case to case, lot to lot then the other flavors of Wolf in my AR's.

    Now once I settle my dispute with Midway over the damaged A/A upper they shipped me I will have to see how my lot of Wolf shoots thur this unit.
    We are all inclined to judge ourselves by our ideals; others, by their acts.

  2. #32
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    I picked up one of the Adams Arms uppers from Midway.
    I had a earlier conversion piston units.....this new one is much better.

    Testing accuracy NATO ammo pressure loads. Easily as accurate as my DI guns in similar configurations, with the same loads.

    Good workmanship....runs well.

    I am mostly interested in very cold weather operation.....they all work when it's hot.

    I don't like running dry carriers and bolts for the cold.
    I haven't gotten to sub zero testing yet .. pretty soon.. but with slip 2000 grease on the bolt and carrier wear points, it's running steadily well, in 10 degree cold, still delivering good accuracy. No gup up like my DI lubed guns in the cold.

    Anyway......I like it very well so far....glad I bought it.

    Paul P.

  3. #33
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    Finally finished my build with my new AA upper and got around to shooting it. It actually has a bit more recoil and muzzle rise than my DI carbine upper. Not too surprising as it's a piston.

    Also, is the finish wearing off a little too easily on their AA uppers? Mine came with little nicks on it, not that big of an issue, but after shooting it a few times and carrying it throughout the shooting sessions, the finish seems to come off quite easy.

    It does run 100% reliable however.

  4. #34
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    Carbine length

    Dont know about their complete upper.
    But Im sure its of great quality, if its anything like the wifes carbine kit here:
    Last edited by Jambi; 03-03-12 at 11:20.

  5. #35
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    Very interesting set up that your wife is running with. Plenty of rail space. Is it a pain in the ass to get to the piston to inspect and clean with that rail?

  6. #36
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    Kind of a waste regarding the rail, we both like irons on our kit.
    Was really after the gain in sight radius.
    Not so much of a pain, just more time consuming.
    Must invert the weapon and let gravity assist you.
    Likewise when putting it back in.
    Plenty of room between the 4" extension to allow manipulation of the gas setting.

  7. #37
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    Quote Originally Posted by ltdanicecream View Post
    Finally finished my build with my new AA upper and got around to shooting it. It actually has a bit more recoil and muzzle rise than my DI carbine upper. Not too surprising as it's a piston.

    Also, is the finish wearing off a little too easily on their AA uppers? Mine came with little nicks on it, not that big of an issue, but after shooting it a few times and carrying it throughout the shooting sessions, the finish seems to come off quite easy.

    It does run 100% reliable however.
    The finish on my AA mid length upper receiver of mine is terrible. If I look at it sternly the paint flakes off. Shoots great though.

    I also have a Huldra Arms 5.45 carbine upper (rebadged AA) that has minimal wear on the upper receiver after 1200 rounds.

    I guess they let a batch of upper receivers get out with faulty finish. I'll probably just krylon mine when it gets too bad.

  8. #38
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    I had so much wear on the inside of my AA upper that I sent it back and they refinished it, its better now. I think they let a batch slip past QC.

  9. #39
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    I've built 5 rifles with complete AA midlength base uppers for myself and a few other people.

    1 was older and apparently their barrels were different. The older one was heavy under the handguards and all of the newer Melonited barrels are thinner profile.

    All of them function with zero issues since the first shot. Some of them have seen several thousand rounds and others only several hundred.

    I have encountered 2 issues:
    1. Carrier tilt. One of the uppers was placed on a well used complete lower receiver and it started to show light signs of carrier tilt. After about 200 rounds it seems to have worn away what it will and has not shown signs since. It is not wearing away significant amounts of the buffer tube so I don't really consider this a major issue.
    2. Cam pin gouging the upper receiver. Out of the 5 that I've built only 1 of them is experiencing this. However I decided to get the POF Roller Cam pin for all of them. Piece of mind for me. Note that the gouging of the receiver did not cause any malfunctions.

    The finish on all 5 of the uppers has been fine. Nothing to complain about. Maybe a bad batch went out.

    I really like these uppers.

    Here are 4 of them in a gangbang pic. The 5th one I built is almost a mirror image of the top FDE rifle.
    Last edited by Underwhere; 12-30-11 at 01:09.

  10. #40
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    I returned my A/A complete upper do to the poor receiver finish after a lengthy phone tag with A/A customer service. I have to say they are tough to get hold of and are slow to respond but I hope that Matt who I spoke with replaces the unit as promised. They did provide a call tag so its going back on their dime.

    The finish on my receiver looked cheaply painted on and soft plus since Midway was selling these units cheap I have to wonder if they were seconds.

    Any how the A/A unit has a lifetime warranty and if the unit fails to live up to normal AR durability standards then its on them to correct it.
    We are all inclined to judge ourselves by our ideals; others, by their acts.

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