AR15 Play Between Upper and Lower

[PMPSHOT]

My AR15 upper and lower has a little side play.wiggle between the upper and lower. It seems that a piece of plain old 8.5" x 11" copy paper placed between the upper and lower pin holes takes out the play. Is this amount of play considered normal? Surprisingly enough, if I am out in the sun the play disappears due to the expansion of the aluminum that is coated in the parkerized black coating. This is a 16" free float barrel AR15 that is used for range use and is accurate at 50 and 100 yards (within 2 MOA at 100 yards with the most inexpensive brass .223/5.56 that I typically use). I am not expecting a .5 MOA with this rifle as it is not designed for that use.

I did look at the Accuwedge but it seems as though it would place a lot of undue stress on the upper and lower.

Thoughts?

 

[wmass]

Thats not uncommon. I have an accuwedge in my bushmaster but dont need one in either of my other three (2 frankenguns and an Armalite). I did however take a razor blade to the bottom of the wedge to remove material so it wouldnt be too tight. When I first dropped it in I needed a punch to drift the takedown pin.

 

[mclina]

Some guys put small rubber O-rings on the rear takedown nub to minimize the movement. I tried it, and it seems to work. I can't remember the o-ring size off the top of my head, but I bought a pack of 100 for a couple bucks on Amazon.

 

[Dadstoys]

It's not unusual and will have no effect on the gun.
If it really bothers you , the accu-wedge will take it out.
Otherwise ignore it and choot it.

 

[fshalor]

What he said. My Franken ARs are tight. My matched Quinten Defense one is loose and wiggles.

Sent from my A0001 using Tapatalk

 

[mclina]

I checked the baggie, and the o-rings I got are 1/4" ID. I believe they are #10s.

If you want some, PM me. If you send me a SASE I will send you 10 of them.

 

[boscru]

Thats not uncommon. I have an accuwedge in my bushmaster but dont need one in either of my other three (2 frankenguns and an Armalite). I did however take a razor blade to the bottom of the wedge to remove material so it wouldnt be too tight. When I first dropped it in I needed a punch to drift the takedown pin.

exactly the same for me---some need it, some don't. 1 or 2 accuwedges laying around is good if you need them--cheap enough to buy, and shipping is the same for 1,2,3 ish

 

[Matt_SERE]

Accu-wedge and others.

https://www.northeastshooters.com/v...5-AR-15-Accu-wedge-vs-tensioning-takedown-pin

https://www.northeastshooters.com/vbulletin/search.php?searchid=21365132

 

[5 DOLLAR FOOT LONG]

#11 o-ring around the front post on the upper (the thing that the pivot pin goes through) will remove the slop. However it will break after a few times of field stripping the gun. I don't bother with this now since it has no effect on accuracy.

 

[grey]

it will not affect accuracy

 

[meth0d]

My S&W lower matched up with either a DSA or BCM upper both exhibited the same type of gap or wiggle. Both combination's always shot better than me.

 

[Dradian]

it will not affect accuracy

This

 

[W.E.C]

What bugs me is the way the upper and lower doesn't line up at this boss.
andy Rooney should have done a segment on it on 60 minutes.