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Posted: 8/22/2016 3:55:41 PM EDT
[#1]
Quoted:
What size oring has been proven in the feild to take up a sloppy fit between upper and lower. I dont have a lot of loosness im the only one that notices it im just ocd. I wish I could remember but I don't. I actually came to post that I tried the o-ring fix and while it does work if you never separate the upper and lower, it doesn't if you do. O-rings broke every time I closed and opened the receivers. Also, it won't work with a lot of free float rails. |
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Posted: 8/22/2016 4:05:39 PM EDT
[#2]
Hmmmm i intended to buy a few of them and replace after every cleaning. Imdidnt know about the free float,rails. I have ap free float rails.
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Posted: 8/22/2016 4:11:04 PM EDT
[#3]
Okay after looking at it i guess the oring method wont work. Poop.
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Posted: 8/22/2016 6:14:07 PM EDT
[#4]
What kind of lower receiver do you have? If you by some odd chance have an Aero Precision gen. 2 receiver, it has a tensioning screw to lessen receiver wobble.
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Posted: 8/22/2016 6:28:11 PM EDT
[#5]
No i have a modulus 80 with ap complete upper. I priced an accu wedge today the local gun shop sells them for 4 bucks ill pick one up tomorrow after i can get to the bank. Id like to know of any other things i can do.
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Posted: 8/23/2016 1:42:28 AM EDT
[#6]
Quote HistoryQuoted:
No i have a modulus 80 with ap complete upper. I priced an accu wedge today the local gun shop sells them for 4 bucks ill pick one up tomorrow after i can get to the bank. Id like to know of any other things i can do. Not worry about it? That's what I'd do. You're trying to fix something that isn't going to be an issue. |
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Posted: 8/23/2016 2:10:03 AM EDT
[#7]
I have a lower made by Quentin Defense that has a set screw with a nylon tip inside the pistol grip tang. That screw goes into the rear takedown pocket and I think it is meant to take up any slack between the upper and lower. You will have to drill and tap a hole under it though.
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Posted: 8/23/2016 3:30:52 PM EDT
[#8]
.500 x.625 x.062 should work fine. Any thicker cross section than that may get too crushed causing the rubber to fail. Always install on the pivot lug only.
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Posted: 8/24/2016 10:47:54 PM EDT
[#9]
If you want to truly eliminate any play between the upper and lower, JP makes a tensioning pin. They are a little inconvenient when you want to break your rifle down, but they will absolutely lock down your lower and upper rock solid.
https://www.strongsidetactical.com/jp-ar-15-take-down-tension-pin/ |
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Posted: 8/24/2016 11:30:09 PM EDT
[#10]
It's a #21 O-Ring 5/8x15/32x3/64
Available at ACE Hardware. Stock # 35738B Made by Danco, Inc., Irving, Texas 75062 I've been using them for 20 years. They work great and see the best solution for receiver slop. Makes upper-lower hit rock solid. Goes around the front lug of the upper. Buy a bunch |
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Posted: 8/24/2016 11:33:42 PM EDT
[#11]
Op I am a bit OCD too I put my upper lower together and said man there is play its got to go. In my head I wanted to fix it but I wanted to wait and think about it consider all the fixes are only semi perminant and add extra parts. Oddly I ended up forgetting about the issue and its no longer an issue. If you want to fix it by an matched upper and lower set. Any other method is just a band aid. Well the tension screws are pretty nice assuming the play isnt so massive it causes a large gap. You do what you want I am just voicing my opinion.
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