AR lower flaw fix?

[kcstott]

Well, I looked at my other billet and there isn't that "line" and there's gobs of material for strength for the takedown spring. I went online and found some photos of lowers made by the same company posted by their owners. Would you believe it, that line is on their lowers too! The serial number on mine is less than #1200 and the serial #1 lower shown on their FaceBook page showed the same "flaw". My question is; if your programer can get the CNC machine to blend one side, why can't he blend the other side. For the life of me I can't figure out why a company would knowingly anodize and release incomplete work! Anyway, I've cooled down and will take the advice of the CalGuns input and just finish building it and shoot it.

I'll tell you why
It's called making a fast buck pure and simple.

[klewan]

I'll tell you why
It's called making a fast buck pure and simple.

Realistically, how long would it take to adjust the programming to make it purty? Or is there some other quirk with CNC? I don't see how they could save much time by leaving that tool mark.

[kcstott]

it's not the time they would save, it's the time they would waste tweaking a program. especially on something that is only esthetic.

Now I'm in full agreement that it should be corrected in the programming and wouldn't take much to do. But some places do not have the attention to detail that other shops do.

[bigbob76]

ask for some money back and just shoot it... not worth the trouble to machine and anzodize or redrosing new ones.

This is what I would do, or ask for a free lower to make it right.

[saki302]

Get a discount.

It's a minor cosmetic flaw, I don't think you'll even see it after a while.

If you're super-nitpicky, then ask for a replacement. I'd be happier with some spare cash.

-Dave

[101st Airborne]

Okay, where is the flaw I'm looking for?

+1.

BTW, I just milled and drilled through hard anodizing yesterday, it's nothing.

[6mmintl]

Looks like a rolled over burr from profile machining, can you slip a razor blade under edges? Problem if you flick it off is there will probably be exposed (under-anodized) base/material and look like a ugly scar.

[thatsteveguy]

Looks like a rolled over burr from profile machining, can you slip a razor blade under edges? Problem if you flick it off is there will probably be exposed (under-anodized) base/material and look like a ugly scar.

That's what I first thought too when I saw that uneven line. I tried using the tip of a knife to see if I could lift an edge and there wasn't any material I could roll over. It's definitely a missed clean up cutter path.

[ar15barrels]

That's what I first thought too when I saw that uneven line. I tried using the tip of a knife to see if I could lift an edge and there wasn't any material I could roll over. It's definitely a missed clean up cutter path.

Hit it with a 2" flap wheel in a die grinder and then krylon the whole lower.
Problem solved...

[yari]

Check to see if your buffer tube hole is centered. To me it looks like the buffer tower contour was not centered properly and may have cut one side more than the other leaving that burr.

[thatsteveguy]

Today I was able to speak to the "boss" who said he's been out of town for about a couple of weeks but is returning in a couple of days. He told me he called his staff to look at the remaining inventory of the production run made around the time of my serial number to see if it's a one time issue or if its a production run issue. His purpose he said was so as to not send me another lower with the same cosmetic flaw if I decide to replace it. Based on what has been posted online I would say it appears to be a production flaw on other lowers made by them. I was asked if I could wait until Monday so that after the owner returns so they would have firm answers for me on what I would want to do.