First AR Build: Loose Receivers

[Laughing Snake]

I am almost done assembling my first AR, just need the charging handle, and I noticed the upper and lower receiver have a very slight wobble. If you look from the side there is just enough of a gap between the two for some light to show through. I have really only handled two AR's before and did not notice this same thing with them, but I wasn't looking for gaps either. So is this a 'be afraid' situation or something normal? I don't mind rigging something up if I have to and I'm not going for looks on this one. The upper is from Palmetto State and the lower is from MAG Tactical, not that I'm pinning any of this on them.

 

[conan1rice]

Its my understanding that this is common with receivers from different manufacturers. You can buy a cheap piece that fits behind the takedown pin and will keep things tighter. I believe there are also screws that will keep the tension and help maintain accuracy.

 

[bberg]

Accuwedge is what you are referring to I believe.

 

[mvician]

Normal, nothing to worry over. Tight isn't always good.

 

[Small's]

Most of the factory guns have some wobble too. One of the four i had was a snug fit the other 3 had a bit of wobble. GTG

 

[midget]

This is the main reason I've switched to using only the dpms slab side upper. I have had it on 4 rifles so far, and all of them are as tight as you can get.

 

[SSGSAD]

ALL Mil., rifles have "wobble".....

 

[gregkl]

On the one I had, I put an o-ring on the front take down pin(I think that's where I put it.) and it didn't rattle anymore.

 

[sgreen3]

Nothing to worry about with parts from different manufactures and even some of the same manufactures. Just buy mags an ammo an proceed to your nearest range!