Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > AR15/10 Rifles


Reply

ar upper help!

 
LinkBack Thread Tools Display Modes
  #1  
Old 03-07-2012, 10:34 PM
Bronze Member
 
Join Date: Feb 2012
Location: wichita ks
Posts: 85
ar upper help!

I have a Surplus Ammo&Arms lower that need tweeking,i'v had 3 uppers on it and only one fit really nice,the bushmaster. the YHM and DMPS both fit good on the pivot pin but the rear is REALLY tight.any ideas? my thought was the holes are supposed to be for a .156 pin plus a few thousands for clearance so i'm wondering about a reamer to remove just the hard coat in the rear hole,.001-.002 i have precision pins and a good selection of reamers so i can get to within .0005-.001 of what it is now with the coating in the hole then just remove the .001-.002 of coating.
Reply With Quote

  #2  
Old 03-08-2012, 08:26 AM
Silver Member
 
Join Date: Dec 2005
Location: Longmont, Colorado
Posts: 325
Re: ar upper help!

I've read in a few places that it will loosen up after you shoot them a few hundred rounds. Have you shot this rifle much with the tight upper/lower configuration?
__________________
If you like your hunting rifle, you can keep your hunting rifle.
Reply With Quote
  #3  
Old 03-08-2012, 09:28 AM
Platinum Member
 
Join Date: Jan 2008
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Posts: 4,391
Re: ar upper help!

Quote:
Originally Posted by ilscungilli View Post
I've read in a few places that it will loosen up after you shoot them a few hundred rounds. Have you shot this rifle much with the tight upper/lower configuration?
This is true, however I would return everything you bought and start over with mil spec componets. Who made that lower again?

When you say "fit real nice" what does that mean? Please be more decriptive.
__________________
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
If you want to shoot Bergers start here!
http://www.longrangehunting.com/arti...accuracy-1.php
Reply With Quote
  #4  
Old 03-08-2012, 12:49 PM
Bronze Member
 
Join Date: Feb 2012
Location: wichita ks
Posts: 85
Re: ar upper help!

Quote:
Originally Posted by ICANHITHIMMAN View Post
This is true, however I would return everything you bought and start over with mil spec componets. Who made that lower again?

When you say "fit real nice" what does that mean? Please be more decriptive.
the rear pins are so tight that once there pushed in you have to flip the weapon over and drive the pin out. the bushmaster upper fit good,not loose, but you could push the pins out with a finger. the YHM & DPMS there would be no field dissasymbly.
Reply With Quote
  #5  
Old 03-08-2012, 01:26 PM
Platinum Member
 
Join Date: Jan 2008
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Posts: 4,391
Re: ar upper help!

Ok that sounds fine they will losen as you shoot it.
__________________
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
If you want to shoot Bergers start here!
http://www.longrangehunting.com/arti...accuracy-1.php
Reply With Quote
  #6  
Old 03-08-2012, 02:58 PM
Bronze Member
 
Join Date: Feb 2012
Location: Texas
Posts: 74
Re: ar upper help!

i had a similar issue, after 300+ rds it loosed up real nice
__________________
I like guns
Reply With Quote
  #7  
Old 03-08-2012, 10:34 PM
Bronze Member
 
Join Date: Feb 2012
Location: wichita ks
Posts: 85
Re: ar upper help!

thanks guys, i did run a reamer in them today,took off.001, from a .251 hole to .252, the rear hole is an oval hole not round so it only hit in the center,just knocking off the hard coat but made a ton of differance,now they slide in smooth with out forcing them but yet still a little stubbern to get out. now all i need is my 6.5 grindel barrel and i'll have another upper ready to go!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: ar upper help!
Thread Thread Starter Forum Replies Last Post
ar upper gunsmith1012 Gun Parts - Stocks, Barrels, Actions, etc. 0 02-16-2012 05:35 PM
K-16 upper Precision_Game_85 AR15/10 Rifles 16 02-03-2012 02:07 PM
WOA 26" Match Upper or RRA 24" Bull Barrel Upper boostedawd91 AR15/10 Rifles 8 09-20-2011 09:49 PM
WTT 24" Heavy Bull Upper for Shorter Upper msdeer Guns For Sale 1 03-19-2010 01:01 PM
WTB AR Upper 1357MAG Gun Parts - Stocks, Barrels, Actions, etc. 0 02-25-2010 06:52 PM


All times are GMT -5. The time now is 07:47 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC