Second threaded hole on the bottom of a AR15 lower next to grip screw.

[RobertMcC]

I just bought a NEA lower. Yay YAY I know all about them...

I noticed when I assembling it there is a second threaded hole ( factory ) next to the grip screw.. Whats it for?

 

[Mister Donut]

Oh man, my friend encountered this when he was building his. I remember a bit of swearing and cursing. I just messaged him so hope to hear back, but I’m sure someone here should be able to provide you with an answer faster.

 

[Trinimon]

NEA rear takedown pin detent/spring hole is on the underside by the grip.

 

[RobertMcC]

I got the rear take down. I'm talking about the grip screw size threaded hole through and through behind the grip screw. And foward of the buffer retainer.

 

[Trinimon]

Ahh, I believe you can buy a plastic tip hex screw to tension the upper/lower receivers to eliminate rattle.

 

[WRH]

If I had to guess, and I do, I would think it might be for a screw that could be adjusted to remove play/wiggle between the upper and lower. It's in the right spot to do just that.

 

[Trinimon]

If I had to guess, and I do, I would think it might be for a screw that could be adjusted to remove play/wiggle between the upper and lower. It's in the right spot to do just that.

Yup, I got one on my Rainier lower. I'm surprised the screw wasn't included in the lower.

 

[RobertMcC]

Ahh, I believe you can buy a plastic tip hex screw to tension the upper/lower receivers to eliminate rattle.

That makes sense. Thanks..

Yeah I bought a NEA lower guy included a LBE Unlimited LPK. I had a brain fart because wondering what the second roll pin is for. DUH NEA has a built in trigger guard.

 

[Sqr]

Never noticed on my new lower, good to know.

 

[RobertMcC]

Never noticed on my new lower, good to know.

I built a dozen lowers, just my first NEA lower that I seen this.

 

[A.T.R.]

A few higher end lowers have this feature.

 

[Hitzy]

I picked up a Tac Innovations lower that had that, and a captive screw for the rear take down pin....kind of neat.

 

[Sqr]

A few higher end lowers have this feature.

no pray tell you are calling an NEA lower high end? Get the aluminum suit out.

 

[09outlander]

My ATRS lower has something similar, but it came with the detent already installed.

 

[Sqr]

I built a dozen lowers, just my first NEA lower that I seen this.

Well I'll be damned my NEA billet set lower is absent of the threaded hole, what gives?

 

[RobertMcC]

Well I'll be damned my NEA billet set lower is absent of the threaded hole, what gives?

Dunno. I only bought the NEA lower because it was 80$ shipped and I wanted a lower in case they banned them.

 

[A.T.R.]

no pray tell you are calling an NEA lower high end? Get the aluminum suit out.

Is that what I stated?

No, it is not.