I'm putting together an ar for a customer. The upper came in today and the holes you put the takedown pins through is super tight. I had to use a mallet. It's a Daniel defense ddm4v7lw. The lower I got is a psa. Anyone have this issue?

Work the pins a few times in and out. Does it loosen then up at all?

Probably needs a bigger bra... Try EE.. Opps, misread, never mind.

 

 

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The front one is super tight. I'm gonna keep messing with it

ALL the PSA lowers I ever assembled were tight in the takedown pins... I used emery cloth and a bit of oil in the holes to get them fitted in nice.

Every DD upper I've tried sticking on a Mega lower has the same issue.  It'll loosen up over time as the rifle is shot and it's taken apart for cleaning.

A little sig oil and putting it through over and over is helping.

 

Here is what it's gonna end up being

 

Psa lower

Magpul str stock

Magpul moe+ grip

Magpul bad lever

Magpul enhanced trigger guard

Daniel defense DDm4v7lw

Battle comp 2.0

Engraved dust cover

 

Still deciding on

Optics

B.u.s.

 

After putting it through over and over and over it loosened up.

 

All I have to say about this upper is its frigging nice. Now I want one.

Exact same problem here on a DD upper

Any lower I mate it to, is tight to the point I need to tap it out with a punch.

I considered opening it up a bit, but I figure too tights better than too loose

Yeah, I tried it with a s&w lower and the same thing

I have noticed all the higher quality parts DD, Seekins, have this same issue. My Seekins loosened up fairly well the fit is still tight and I am ok with that.

I can't believe how light it is for having a 12" hand guard.

I can't believe how light it is for having a 12" hand guard.

And there are even lighter options for the handguard now.  One of these days, I want to try to build a <6lb 16" barrel AR.

And there are even lighter options for the handguard now.  One of these days, I want to try to build a <6lb 16" barrel AR.

 

Not really hard. The I recently built a 5.5lb 14.5 plus pinned comp rifle, including sights but not optics and I didn't even have to use fancy parts, I just used a lighter barrel profile, with a TRX mid-length handguard. Sub 6lb 16" is rather easy. 

I can't believe how light it is for having a 12" hand guard.

Modular rails can save weight with out spending a butt load of money on the expensive lite quad rails. They end up weighing about the same once you add 3 rail sections though.. and you loose the ability to move stuff around easily.. i would have used one for my last build but they dont make the 10" length i was going for...

I think the quad rail that came on my sig 516 is a Troy. I wasn't sure how much weight I'd really save changing it

https://spreadsheets.google.com/pub?key=pwswheghNQsFnUZMkZNF2DQ&output=html

My CMMG lower is the same way, just gotta "break" em in a bit.

I prefer them tight.. If the holes and pins are the correct size its a good indication of a tight fitting upper/lower.. and who wants a sloppy one?

So true...

wish I had that problem.

Lol

A little sig oil and putting it through over and over is helping.

 

 

After putting it through over and over and over it loosened up.

 

 

I prefer them tight.. and who wants a sloppy one?

 

 

So true...

 

 

wish I had that problem.

 

 

Hey now! no reason to go there!

Lol

Gun is done

 

 

6 pound 9 oz

 

 

After it left

 

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