AR15.Com Archives
 What to tighten up the lower/upper receivers?
Jeffreysox  [Team Member]
12/12/2010 8:58:15 AM
Do the accuwedges work? Or is there any other tricks to tighten up the pairing.

On 2 of my 3 latest builds, there is a little play, not a ton, but with one being my precision rifle, I dont really want any play.

So I figure, I might as well tighten them all up.

Is the accuwedge the best thing?
AnalogKid  [Member]
12/12/2010 9:04:24 AM
There are replacement takedown pin arrangements available which use screws and an eccentric to remove slop. Never tried one; can't tell you if they're effective or not.

I got a handful of fun-show Accu-wedges for $1/ea; they seem to work as well as their $7 counterparts.

FWIW.
Alien  [Team Member]
12/12/2010 9:05:39 AM
Accuwedges work decently. You can also get an appropriately sized o-ring to fit around your receiver lug.
Jeffreysox  [Team Member]
12/12/2010 9:05:50 AM
Originally Posted By AnalogKid:
There are replacement takedown pin arrangements available which use screws and an eccentric to remove slop. Never tried one; can't tell you if they work well or not.

I got a handful of fun-show Accu-wedges for $1/ea; they seem to work as well as their $7 counterparts.

FWIW.


My other question, I dont think I ever saw the accuwedges, can you see them through the receiver, or would that just be on an extremely poor match up?
hotrod_sxty8  [Team Member]
12/12/2010 9:06:38 AM
accu wedges work pretty good I have them in both my rifles
there is also a way to put a threaded set screw into your lower reciever the puts upward tension on the upper reciever. but this may require drilling a hole in your lower....
hotrod_sxty8  [Team Member]
12/12/2010 9:08:19 AM
Originally Posted By Alien:
Accuwedges work decently. You can also get an appropriately sized o-ring to fit around your receiver lug.


forgot about this one...
nightdh  [Team Member]
12/12/2010 9:09:37 AM
No you can't see them normally but if there is a wide enough gap it will be visible.
Originally Posted By Jeffreysox:
Originally Posted By AnalogKid:
There are replacement takedown pin arrangements available which use screws and an eccentric to remove slop. Never tried one; can't tell you if they work well or not.

I got a handful of fun-show Accu-wedges for $1/ea; they seem to work as well as their $7 counterparts.

FWIW.


My other question, I dont think I ever saw the accuwedges, can you see them through the receiver, or would that just be on an extremely poor match up?


mikNtx  [Member]
12/12/2010 9:13:34 AM
here's a tensioning pin



http://www.midwayusa.com/viewProduct/?productNumber=339281
gcrookston  [Member]
12/12/2010 9:15:46 AM
I've used accuwedges with some success, but in my last 4 builds I've gone to Tactical Innovations T15 lowers which have a built-in tensioning screw and rear pin detent capture feature. I've used lowers that are more expensive, but I haven't found one better and these features alone make them a great platform for precision builds.
gsp  [Team Member]
12/12/2010 9:16:21 AM
My POF lower and VLTOR upper are so tight, I have to use a hammer to get them apart
USMC88-93  [Team Member]
12/12/2010 9:17:01 AM
I understand your concern and desire to tighten up the upper/lower play but it has nothing to do with the accuracy of the rifle. The bolt locks up to the upper receiver and as long as your shooting position holds the upper steady you are good to go.
583  [Team Member]
12/12/2010 9:20:12 AM
O Rings - size 7 for the front lug.
rod727  [Member]
12/12/2010 9:20:51 AM
Originally Posted By USMC88-93:
I understand your concern and desire to tighten up the upper/lower play but it has nothing to do with the accuracy of the rifle. The bolt locks up to the upper receiver and as long as your shooting position holds the upper steady you are good to go.


I was waiting on one you guys to jump in here. lower position will not impact sight or optic alignment. That being said I don't like it either it just seems sloppy.
USMC88-93  [Team Member]
12/12/2010 10:23:22 AM

Originally Posted By rod727:
I was waiting on one you guys to jump in here. lower position will not impact sight or optic alignment. That being said I don't like it either it just seems sloppy.
I do not discount his desire to tighten it up, and in no way was trying to steer him away from it.

Silver-Gun_Superman  [Team Member]
12/12/2010 10:39:36 AM
Been on my "to get" list for a while: http://www.demontactical.com/demon-tactical-quick-pins.html
Magurgle  [Team Member]
12/12/2010 10:41:39 AM
epoxy bed them.

Maybe even use JB weld, be sure you use enough release agent though.
Eazy_E  [Team Member]
12/12/2010 10:48:16 AM

Originally Posted By 583:
O Rings - size 7 for the front lug.

This. One time use though. They fall apart as soon as you release the rear take down and pivot on the front take down. They're cheap though.
jvic  [Team Member]
12/12/2010 10:53:11 AM
I use the accuwedge. Works good.
dsmjim  [Team Member]
12/12/2010 11:06:15 AM
Epoxy bed or use the JP tension pin.

If you use the JP pin you will need tools to take down the rifle. To me this is OK on a 3 gun rifle or a hunting rifle but not a defense rifle.
sel366  [Team Member]
12/12/2010 11:08:11 AM
Originally Posted By jvic:
I use the accuwedge. Works good.


Shung  [Team Member]
12/12/2010 11:09:43 AM

Originally Posted By sel366:
Originally Posted By jvic:
I use the accuwedge. Works good.



accuedge and/or O ring on pivot pin. Works fine.

WGPKlaus  [Team Member]
12/12/2010 11:27:22 AM
Accuwedges or



Shawnmt6601  [Team Member]
12/12/2010 11:36:27 AM
Originally Posted By USMC88-93:
I understand your concern and desire to tighten up the upper/lower play but it has nothing to do with the accuracy of the rifle. The bolt locks up to the upper receiver and as long as your shooting position holds the upper steady you are good to go.