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Posted: 9/15/2004 7:32:37 PM EDT
[Last Edit: 9/16/2004 7:24:01 AM EDT by Paul]
Link Posted: 9/15/2004 9:41:32 PM EDT
What tools and skills are most needed to finish out an 80% lower? I kinda like the idea of a gun that no forms were ever filled out on. That's the attarction right? Not a firearm therefore not nessisary to FFL transfer?
Link Posted: 9/16/2004 6:05:25 AM EDT
[Last Edit: 9/16/2004 6:20:05 AM EDT by Paul]
Link Posted: 9/16/2004 6:09:36 AM EDT
That's only one of the attractions for some people. Many people just like to make their own . The lack of paperwork is secondary.

It's MUCH easier if you have a mill, but you can get by with a drill press and a good set of calipers. The jig that Paul mentioned makes it a breeze, but is not required. Some have done it with a dremel, but it requires a lot of very careful work. Drilling the FCG holes accurately is probably the most difficult without a mill, drill press or the jig. Get the holes wrong and the engagement surfaces won't mate properly.

What most people have difficulty with is the drilling and tapping of the buffer tube hole. Without a mill, drill press or jig, it is very difficult to get it straight and level. Get it wrong, and your bolt carrier will bind in the tube. It has been done by hand, so its not impossible.

As for materials, you'll need a 3/32" x 6" drill for the bolt catch ($1.50), a 1 1/8 drill bit ($20) and a 1 3/16" x 16 Tap ($55). The other drills that are required are standard sizes. A set of reamers helps with getting the holes sized exactly, but aren't required if you drill carefully.

Personally, I won't deal with NOC based on what they did to TanneryShop when its owner asked NOC to handle his business while he was on active duty.
Link Posted: 9/16/2004 6:30:10 AM EDT
No I understand that once built all firearms laws apply, just that you don't need an FFL to get the 80% lower before it's finnished.

Thanks for the detailed description too! Thats really helpful. I notice you said the jig helps with 8 out the 15 holes. What are the other 7 holes and do most people do those by hand? I guess you just apply some kind of bake-on finish once complete?

Thanks again for the description and taking time to answer.
Link Posted: 9/16/2004 6:49:00 AM EDT

Originally Posted By Paul:

This is is 110% a firearm and ALL the laws on firearms cover it - you're not going to walk onto an airplane with this! It is a firearm and if you sell it you have to follow your local laws concerning such actions. Here in California that means the required registration.




Actually you CANNOT sell a firearm you built yourself. That would make you a manufacturer and you would need the appropriate FFL.

http://www.atf.gov/firearms/faq/faq2.htm#a7

Mike
Link Posted: 9/16/2004 7:12:43 AM EDT
Link Posted: 9/16/2004 9:28:51 AM EDT

Originally Posted By mchasal:

Actually you CANNOT sell a firearm you built yourself. That would make you a manufacturer and you would need the appropriate FFL.

http://www.atf.gov/firearms/faq/faq2.htm#a7

Mike



Not true...read it again.

"With certain exceptions a firearm may be made by a nonlicensee provided
it is not for sale and the maker is not prohibited from possessing firearms. "

You can not make it if you are planning to sell it. It doesn't say you never can sell it, otherwise they would have said "provided it is not sold". Having the intent to sell makes you a manufacturer for which other rules apply.
Link Posted: 9/16/2004 9:36:07 AM EDT
Which of the National Ordnance receivers is this one? Is this the $129.50 "HPS Forged Receiver" or the $115.00 "JFM Forged Receiver"?
Link Posted: 9/16/2004 10:58:57 PM EDT
[Last Edit: 9/16/2004 11:31:39 PM EDT by ShadowOne]
Where do you get a $50 drill press?
Link Posted: 9/17/2004 5:19:03 AM EDT
Here's my National Ordnance 80% forging finished:



Cheers
Link Posted: 9/17/2004 6:02:11 AM EDT
[Last Edit: 9/17/2004 6:02:54 AM EDT by neilfj]
Looks great. What did you finish it with?

Here's my Tannery Shop 80% (#2 quality) after I anodized and dyed it.

Link Posted: 9/17/2004 6:05:23 AM EDT
Link Posted: 9/17/2004 6:24:50 AM EDT
I home anodized/dyed mine also.
Link Posted: 9/17/2004 9:16:44 AM EDT
Link Posted: 9/18/2004 10:38:31 AM EDT
[Last Edit: 9/18/2004 10:39:20 AM EDT by Darkest2000]
I noticed that the trigger guard take down hole is scalloped, did it come that way or did you have to do it on your own with an end mill?
Link Posted: 9/18/2004 2:11:03 PM EDT
Link Posted: 9/18/2004 2:52:05 PM EDT
Paul,
It means dished out or concaved, at least it does in New England...where we know scallops and lobsta.
Link Posted: 9/20/2004 9:19:23 PM EDT
HEY GUYS GREAT PICTURES AND INFO
I DO CARRY 80% FORGINGS NOW
WILLIAM
Link Posted: 11/12/2004 1:10:57 PM EDT
Link Posted: 11/12/2004 1:19:41 PM EDT
i jsut started workign on my first. I msut say this is addictive.

However, mscdirect had the buffer tap on backorder till february. :-(

Anyone know anther source for the buffer tap?
Link Posted: 11/12/2004 8:24:04 PM EDT
[Last Edit: 11/12/2004 8:27:53 PM EDT by 6ppc]
I bought mine through Enco for a little under $30. Check the URL below for the part number, they have them in stock.
Enco 1-3/16" x 16 Tap
p.s. If you are tapping in a Drill Press or a Mill, the Micro Tap Guide listed below is a great addition.
Enco Micro Tap Guide
Link Posted: 11/12/2004 8:39:36 PM EDT
tagged
Link Posted: 11/12/2004 9:43:46 PM EDT
So if you live in Kalifornia you can Finish your own lower and by pass the AWB laws? I may be reading this wrong, but that is was bad ass loop hole

Am I wrong?
Jerad
Link Posted: 11/12/2004 9:47:14 PM EDT
Paul,
Does the National lower already have the trigger pocket milled out completely so that the parts drop in?
Link Posted: 11/12/2004 10:01:03 PM EDT

Originally Posted By Jerad:
So if you live in Kalifornia you can Finish your own lower and by pass the AWB laws? I may be reading this wrong, but that is was bad ass loop hole

Am I wrong?
Jerad



I wish. Nope, it's illegal to finish these in California.
Link Posted: 11/12/2004 10:32:35 PM EDT
[Last Edit: 11/12/2004 10:37:20 PM EDT by NightWolf]
Paul i don't imagine u just using those receivers for paper weights

P.S. i would like to hear more about your AR .50 project
Link Posted: 11/12/2004 10:33:50 PM EDT
And yes you do have to mil the FCG and the rear pocket for the take down lug, not that i have finished one before......
Link Posted: 11/13/2004 12:30:00 PM EDT
Link Posted: 11/13/2004 7:16:38 PM EDT
[Last Edit: 11/13/2004 7:16:55 PM EDT by NightWolf]
nice, I will be waiting with u, I have everything but the law to complete mine here in Cali
Link Posted: 11/14/2004 10:40:56 AM EDT
Paul,

Thanks for the info and comparison pictures. This is a project I've been considering for a while.

CDKayak
Link Posted: 11/15/2004 12:49:43 PM EDT
i got a question can i send my reciever off to get parkerized after its finished or do i have to do it myself.
Link Posted: 11/15/2004 1:30:09 PM EDT
sorry pal, you cannot parkerize aluminum

Refinish it yourself with John Norrell's moly resin, best stuff there is and easy to do.
Link Posted: 11/23/2004 5:29:02 PM EDT
Link Posted: 11/24/2004 8:15:28 AM EDT
Every time I dismiss this idea of building up an 80% forging, another of these posts comes along and I start panting again.

I may finally succumb and have to dedicate 2005 as the "year of the 80% build".

This is what I get for hanging around a bunch of addicts....
Link Posted: 11/24/2004 11:38:51 AM EDT
WOW! I was feeling a little down in the dumps lately because I somehow managed to 'complete' my collection. I already own EVERYTHING I ever wanted....HK91, AR10, several AR15s, personally customized carry pistols, favorite hunting rifles/shotguns, and top-o-the-line optics. The only accessory I'm still 'needing' on is one of SWS's railed tubes for a DPMS 308. On top of that, my entire collection now runs 100% (THAT took a few years!), leaving me with nothing firearms related to tinker on. Your thread and photo layout just gave me the bump I needed, and I will happily be progressing into a whole new stage of BRD!


THANK YOU!
Link Posted: 12/20/2004 9:29:01 AM EDT

Originally Posted By operatorerror:

Originally Posted By Jerad:
So if you live in Kalifornia you can Finish your own lower and by pass the AWB laws? I may be reading this wrong, but that is was bad ass loop hole

Am I wrong?
Jerad



I wish. Nope, it's illegal to finish these in California.



Has anyone considered making a 10 round magazine permantly fixed? How would that be illegal? The Fab-10 is essentially that. The DOJ defines a removable magazine as one that does not require tools for removal.
Link Posted: 12/20/2004 2:09:03 PM EDT
The guy at highcapmagparts.com/byogun.com has a page on how you can build up an 80% lower to be Kalifornia legal, by leaving the spring out of the magazine catch and shimming the catch after you put the mag in. It looks like hell, but appears to be in line with the KA state prohibition of a "removable magazine", in that you have to use tools to get the magazine out:

http://www.byogun.com/ca15.htm

He has inventory again, after the Kalifornia DoJ came around and confiscated all his stuff. His story is pretty interesting. I bought his jig, it seems to work pretty well. I'm part way through my first 80% lower, but I'm waiting to get a drill press to drill the firing mechanism holes. The pivot pin, takedown pin, and trigger guard pin holes all came out fine with the DeWalt cordless, in spite of my best efforts to wait on getting a real drill.

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