Turn my paperweight into an 80%'er

[thepipes]

Hi,

I'm looking for someone in Northern Co to turn my un-touched ar15 lower into and 80%'er so I can finish it. Any ideas out there?

Dan (In Windsor)

[Irving]

Can you elaborate?

[kidicarus13]

This ought to be good. Subscribed.

[SideShow Bob]

Can you elaborate?

He wants someone to turn one of these (a raw forging) into an 80% lower.

http://img.tapatalk.com/d/14/06/04/apyjyme6.jpg


Sent from my ass using re-fried beans.

[ChunkyMonkey]

Who owns a machine shop off Hwy 52 and I-25 again? He did a member's here.

[henpecked]

I have a shop at 52 and I25 but I did not do anyone's lower.

[XJ]

Give these guys a try [Flower]

http://www.dremel.com/en-us/customerservice/productsupport/wheretobuy/Pages/default.aspx

[cofi]

Give these guys a try [Flower]

http://www.dremel.com/en-us/customerservice/productsupport/wheretobuy/Pages/default.aspx

http://www.highplainscnc.com/


You need a shop shop that can broach the magwell

[henpecked]

It will be cheaper to buy a 80%. Guy doesn't even say if he has any fixtures with his paper weight.

[68Charger]

Generally, you get a raw forging if you're going to take it to complete yourself...

http://www.arlower.ray-vin.com/disclaimer.htm

he even has drawings there to make the fixtures: http://arlower.ray-vin.com/ar15/drawings.pdf

Haven't attempted this myself, decided I would be a lot more comfortable when I have a DRO on my mill (need linear scales still, have a Shumatech DRO kit- but it doesn't come with scales.

[ray1970]

Generally, you get a raw forging if you're going to take it to complete yourself...


Or if you want a nifty paperweight.

[68Charger]

Generally, you get a raw forging if you're going to take it to complete yourself...



Or if you want a nifty paperweight.

Why not both? [Coffee]
Well, I guess a completed lower wouldn't fly well at my office (even a raw forging would be risky)- but I'm working from home mostly now...

[thepipes]

Wow,
Thanks for all the interesting responses. Guess I'll just keep it a paperweight.
Dan

[henpecked]

figure a shop rate of 65.00 per hour. Unless they already have the fixtures and programs it would be cheaper to buy a 80%

[Martinjmpr]

FWIW I just bought a cast 80% lower for $44.99, free shipping.

Came in the mail yesterday, looks pretty good. I compared it side - by - side with my DTI AR and couldn't see any noticeable differences (but I didn't mike it or anything either.)

[SAnd]

I found that when I did a raw forging it took me about 8 hours to machine the mag well and about 8 hours to machine everything else. I used the instructions from the R Brandes instruction book that 68Charger linked to in post #10. I'm a totally amateur guy with a mill-drill so I imagine professional would be quicker. I pretty much use an 80% lower now if I can. I keep a raw forging around just because I think they are cool.

As an example of what you are doing the raw forging weights 1 pound 9 ounces and a fully machined lower weights 8.2 ounces.

[kidicarus13]

FWIW I just bought a cast 80% lower for $44.99, free shipping.

Here?
http://www.ar-parts.net/ar-15/80-lower-receiver-graphite-black/ (http://www.ar-parts.net/ar-15/80-lower-receiver-graphite-black/)

[Martinjmpr]

Here?
http://www.ar-parts.net/ar-15/80-lower-receiver-graphite-black/ (http://www.ar-parts.net/ar-15/80-lower-receiver-graphite-black/)

Yup, that's the one. Sitting on my desk right now. I compared it side by side with my DTI lower on the middie that I built in 2010 and I can't see any differences (well, no differences except the fire control pocket.)

[Singlestack]

Who owns a machine shop off Hwy 52 and I-25 again? He did a member's here.

Not sure about "who" but Frontier metal specialties is there - wouldn't surprise me a bit if they did it.

[Dalendenver]

You don't have to broach the magwell in any 80% that I have seen, that is already done. I have finished one with nothing more than a jig, drills, end mill and a drill press. Works great. Look at Quentin Laser for a nice billet and cncguns for the jig and instructions.