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AR15.COM
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11/17/2009 5:55:20 PM EDT
I just built an ak on a flat and I'm really into the 80% receivers now. How hard is it to do an ar15 receiver, I thought this one looked good.80% receiver With this one I wouldn't have to thread for the buffer tube. The only worry I have here is how do I make the pin hole for the bolt release? It runs parallel to the receiver so I can't fit a drill in there.
11/17/2009 6:25:53 PM EDT
[#1]
It requires a VERY long drill bit. You have to cut VERY slowly, so that the drill doesn't walk, and stays parallel. You could also make a figure to help guide the long bit.
11/17/2009 7:26:36 PM EDT
[#2]
Sounds good. How about that receiver, does it look good? Is 120 a decent price for this these days.
11/17/2009 8:27:09 PM EDT
[#3]
I would just get a stripped lower and drop in all the parts. To much work for me
11/17/2009 9:48:55 PM EDT
[#4]
Why would you buy it for that price when you can buy completed stripped lowers on the EE for $100, even if you pay $30 for the transfer your only out the $5 difference.  If I missed something someone please let me know.
11/17/2009 10:02:14 PM EDT
[#5]



Quoted:


Why would you buy it for that price when you can buy completed stripped lowers on the EE for $100, even if you pay $30 for the transfer your only out the $5 difference.  If I missed something someone please let me know.


to keep it "off the books"



 
11/18/2009 2:22:42 AM EDT
[#6]
Actually, that particular one wouldn't be too bad to finish as it already has the buffer tube hole threaded, which is one of the mor edifficult/expensive things to do.

It also looks like it has the fire control holes marked, whihc also makes it easier.
11/18/2009 11:21:46 AM EDT
[#7]
the reason i want to do it is because i dont want to do all the paperwork of getting a stripped lower plus i already did that once before and was too easy. I like the idea of projects, i only wish it was cheaper, i heard 80%  receivers used to be $40. Guess nothin stays the same
11/18/2009 11:41:13 AM EDT
[#8]
I had to pay a whopping $1.40 for the long drill for the bolt release hole. If you google up the Ray-Vin PDF on how to make a 0% lower, it has a drawing for an easy little drill guide to locate that hole. That manual calls out 1/2" x 1/2" block of steel, but I made one out of a piece of 3/8" x 3/8" scrap.

ETA: Is anybody else thinking an X% lower with the FCG already milled out is no longer legal? I think I saw a reference to a BATFE link about that via arfcom recently, but I might be totally full of crap.

Yet Another Edit: Found it again.


Machined in compliance with recent determination 903050:MMK-3311/2008-680, "Generally, if the receiver-blank can not accept a barrel and the fire-control components can not be installed (or it can not easily be modified to accept such components), it is not a firearm." And determinations 903050:MMK-3311/2009-323 and /2009-467, "To rule out any misconceptions, we reiterate that an AR-15 type receiver-blank having any fire-control pivot pin holes or indexed, or any portion of the fire-control cavity milled in any way will be classified as a firearm pursuant to 18 U.S.C. 921(a)(3)."  
11/18/2009 12:27:10 PM EDT
[#9]
That one is pretty interesting, I don't think that's actually a legal 80% lower.

I just ordered mine from tactical machining, for cheaper but they do not have the FCG pocket milled out or holes located per the BATF rules.
http://www.tacticalmachining.com/
11/18/2009 3:53:56 PM EDT
[#10]
I'm fairly certain that would be considered a firearm by the ATF.  I'd stay away.  The tactical machining ones are about as far as you can go without getting into trouble.
11/18/2009 4:04:42 PM EDT
[#11]
Quoted:
I just built an ak on a flat and I'm really into the 80% receivers now. How hard is it to do an ar15 receiver, I thought this one looked good.80% receiver With this one I wouldn't have to thread for the buffer tube. The only worry I have here is how do I make the pin hole for the bolt release? It runs parallel to the receiver so I can't fit a drill in there.


Doing an 80% really isn't as hard as some people make out....all you need is patience (plenty of it if you want a nice result) and a drill press with maybe a cross slide table.
I personally used one of those 1-1/2 horse bench mills from harbor freight for my first 80%'er, If you get one of the many jigs out there all you really need is a hand drill.
If your worried about lining up the tap for the buffer tube a drill press helps just for keeping the tap aligned. I think I spent about 4 hours on my first one now I can do it in less than half that but keep in mind I make my receivers a very tight fit upper to lower.

Good luck with your project.
11/18/2009 7:05:11 PM EDT
[#12]
I would run away from that lower.  For the following reasons

1) It is way more then a 80% lower.  Looks like you have to drill what 10 holes and you have a functoining lower?
2) The mag well is not EDM cut
3) the Fire contol area is not machined out evenly

Just go to Tactical machineing  and get one of thiers.  They have a letter from BATFE saying thiers is GTG.


11/19/2009 4:54:40 PM EDT
[#13]
Quoted:
I'm fairly certain that would be considered a firearm by the ATF.  I'd stay away.  The tactical machining ones are about as far as you can go without getting into trouble.


It is, in-fact, regarded as a firearm once you take it beyond 80%.  However, you are not required to "register" it with anyone.  It cannot be resold if the sole purpose of making it was to build and sell for a profit.  The ATF suggests that the homemade gun be marked with a serial number, but not law.

I get mine here.  Excellent machining in the mag well area.  Very simple to finish in a good drill press with a 2-axis slide vise.

https://www.vbd.com/noc/shop/products_detail.asp?CategoryID=29&ProductID=272
11/21/2009 5:47:35 AM EDT
[#14]
Quoted:
Quoted:
I'm fairly certain that would be considered a firearm by the ATF.  I'd stay away.  The tactical machining ones are about as far as you can go without getting into trouble.


It is, in-fact, regarded as a firearm once you take it beyond 80%.  However, you are not required to "register" it with anyone.  It cannot be resold if the sole purpose of making it was to build and sell for a profit.  The ATF suggests that the homemade gun be marked with a serial number, but not law.

I get mine here.  Excellent machining in the mag well area.  Very simple to finish in a good drill press with a 2-axis slide vise.

https://www.vbd.com/noc/shop/products_detail.asp?CategoryID=29&ProductID=272


You are absolutely correct.  In this case, the seller states that it is not a firearm and you don't need an FFL.  That's why I would be concerned.
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