User Panel
User Panel
User Panel
|
Posted: 9/13/2010 11:51:40 AM EDT
[#1]
What are you using for lube? Anything less than axle grease and I wouldn't do it. There's not really any trick. Mine went it but it was a little stubborn. Machining tolerances I suppose.
|
|
|
|
Posted: 9/13/2010 11:58:08 AM EDT
[#2]
Mulit Purpose Lithium Grease
|
|
|
|
Posted: 9/13/2010 1:04:59 PM EDT
[#3]
I just did one. Slid straight in the front of the receiver. TIght but it went in all the way. Only lubed it with gun oil. Spun with no problem.
|
|
|
|
Posted: 9/13/2010 1:12:39 PM EDT
[#4]
It will spin, but it is extremely tight. A slight twist the wrong way and it becomes stuck.
|
|
|
|
Posted: 9/13/2010 1:50:01 PM EDT
[#5]
I had the same problem. I actually have to use a clamp like this to turn and remove the tool rather than via drill. It loosened up some by the time I was done but in that particular receiver I would still consider it tighter than expected.
|
|
|
|
Posted: 9/13/2010 2:04:54 PM EDT
[#6]
I put a philips head screw driver in the indention opposite the cutting end to push it out while I spun the drill in reverse. I used SAE 30 for lube.
|
|
|
|
Posted: 9/13/2010 2:39:36 PM EDT
[#7]
I've seen uppers at both ends of the spectrum. I've never had one that didn't loosen up by the time the procedure was complete. Either machining tolerances or anodizing could be the culprit for a tight fit.
|
|
|
|
Posted: 9/14/2010 5:48:24 AM EDT
[#8]
I tried it again on both uppers with the same results. It stops just as it clears the ejection port. I can force it, but then it takes me 30 minutes with the corded drill to get it to back out. I don't think this is going to be worth the hassle. I thought about running a little fine lapping compund on the shaft, but for the gain that I would get at the chance of messing up a good upper, I don't think it is worth it. What do you think?
|
|
|
|
Posted: 9/14/2010 5:54:57 AM EDT
[#9]
I certainly wouldn't force it and I wouldn't lap the inside of the receiver. You should do whatever you can to insure the compound doesn't get into the receiver bore. It's possible that you have a lapping tool that is machined improperly. If that were the case and you used lapping compound you would not only destroy the anodizing inside the receiver but you could be making the fit too loose. Perhaps I missed this but which uppers are you using? I have found Mega uppers to be extremely tight.
|
|
|
|
Posted: 9/14/2010 6:13:36 AM EDT
[#10]
I had this problem myself. I actually sent the tool back to midway with a letter explaining that I thought it was on the high side of the tolerances or out of spec. They sent me a new one that fit just right. It may be the tool.
|
|
|
|
Posted: 9/14/2010 6:24:46 AM EDT
[#11]
They are spikes uppers. I have a third on my 6.8 that I was going to try, but I might consider sending the tool back and see what they say.
|
|
|
|
Posted: 9/14/2010 6:38:35 AM EDT
[#12]
I had this problem with mine ... I ran some 600 grit sand paper over the part that goes inside the upper and after that it was fine. I think it was just slight machining marks or some kind of surface build-up on it ... after I sanded it I put some CLP on it and it slid right in the upper no problems.
|
|
|
|
Posted: 9/14/2010 8:50:50 AM EDT
[#13]
I had the same issue with a BCM upper. It is now a paper weight.
|
|
|
|
Posted: 9/14/2010 9:08:20 AM EDT
[#14]
Quoted: I had the same issue with a BCM upper. It is now a paper weight. How did you make your upper a paper weight? |
|
|
|
Posted: 9/14/2010 10:42:46 AM EDT
[#15]
I've found that if you're using a clamshell, you can get the vise too tight and it slightly distorts the upper. I loosen the vise a little and was good to go. I've also had some uppers that had tight spots, but working the tool in and out, slowly took care of the problem. When done, you could see where the anodizing was worn through. I only use a light oil for lubrication.
|
|
|
|
Posted: 9/14/2010 11:55:18 AM EDT
[#16]
I tried loose clam shell, no clam shell, light oil, heavy oil/grease. I even lightly sanded tool. Nothing worked. When I put it in a lathe, it wobbled. I ran it across a true surface and noticed it is slightly out of true. I called Midway and they stated that they have had issues in the past. They are sending me a new one and said to keep the old one. We will see how this works…
|
|
|
|
Posted: 9/14/2010 12:11:00 PM EDT
[#17]
Please pardon my ignorance but what is lapping?
|
|
|
|
Posted: 9/14/2010 12:43:26 PM EDT
[#18]
Quoted:
Quoted:
I had the same issue with a BCM upper. It is now a paper weight. How did you make your upper a paper weight?  Ouch!
|
|
|
|
Posted: 9/14/2010 2:26:45 PM EDT
[#19]
Quoted:
Please pardon my ignorance but what is lapping? Squaring/truing the upper's face before the barrel is installed. 
|
|
|
|
Posted: 9/14/2010 3:01:52 PM EDT
[#20]
Quoted:
I tried loose clam shell, no clam shell, light oil, heavy oil/grease. I even lightly sanded tool. Nothing worked. When I put it in a lathe, it wobbled. I ran it across a true surface and noticed it is slightly out of true. I called Midway and they stated that they have had issues in the past. They are sending me a new one and said to keep the old one. We will see how this works… Wow. Must have been made with a Monday hang over. 
|
|
|
|
Posted: 9/14/2010 3:26:06 PM EDT
[#21]
Quoted:
I had this problem with mine ... I ran some 600 grit sand paper over the part that goes inside the upper and after that it was fine. I think it was just slight machining marks or some kind of surface build-up on it ... after I sanded it I put some CLP on it and it slid right in the upper no problems. Forgot to mention I did the same thing. |
|
|
|
Posted: 9/14/2010 7:20:30 PM EDT
[#22]
I have noticed slight tightness with the stag and bcm uppers when trying to lap them. After using a good amount of gun oil it was smooth sailing. I highly recommend not lapping on sanding the inside of the receiver. My thought would be to contact midway and see what the can do.
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
