AR lower with jig questions

[Chriscraft245]

CNC

Can I get a PM with the contact info of the member that has a cnc mill set up for finishing 80% lowers. I'd like to find out if he can do a one off custom lower for bolt action.

 

[Pinecone]

Be careful with a CNC finishing of a lower.

BATFE cracked down on these in CA, determining that pushing the start button on a CNC machine, that was already programmed was NOT building it yourself.

 

[StaFrosty]

ARES

I have had no problem with ARES, bought 7 Billet lowers and 6 parts kits with nooooo problem. I have received them and they are great, I've finished one and am getting tuned up to do the rest. They NOW have the Billet lowers for 90.00, their x-mas in July sale is what I was told by Jimmy that works there. Very nice people, was told by them, any problems, let em know and they would make it right, by the way, I ordered and received them within the past 3 1/2 weeks. I did mine on a very large Drill Press. I have a toolmaker friend and showed the first one to him, he was impressed and said he couldn't tell it was made from my Drill Press. I was told by him I could use his Bridgeport Mill, but I declined. Anyway if you are doing it on a Drill Press you need a 5/32 drill bit for the side pins, 3/8 drill bit for the selector switch, a 3/8 end mill for finishing the interior, and a 1/4 end mill for the trigger slot, other than that its a snap.

 

[lx1x]

Be careful with a CNC finishing of a lower.

BATFE cracked down on these in CA, determining that pushing the start button on a CNC machine, that was already programmed was NOT building it yourself.

From what I read. That's totally different. The CNC shop was charging money and the customer was just pressing the button...

Now If you own a CNC machine and doing your own lower from downloaded instruction.. I believe that is still OK.

 

[risk]

From what I read. That's totally different. The CNC shop was charging money and the customer was just pressing the button...

Now If you own a CNC machine and doing your own lower from downloaded instruction.. I believe that is still OK.

So renting a cnc machine and pushing a button to finish an 80% is not legal? Link please if anyone has info on this.

 

[DutchV]

Quentin Defense has theirs in stock, supposedly.

http://quentin-laser.com/store/index.php?cPath=27

 

[Sticky]

From what I read. That's totally different. The CNC shop was charging money and the customer was just pressing the button...

Now If you own a CNC machine and doing your own lower from downloaded instruction.. I believe that is still OK.

If you own the machine there is no issue, but there are some cases recently in Cali that basically forced mfrs of 80% lowers to discontinue using the same machines (renting time) to have customers finish their lowers. I believe in one or two cases the mfrs just subcontracted out to a shop (or setup a shop) in a different location to circumvent the ATF. Basically, from what I read they could not produce paperweights and allow finishing of the partial lower at the same facility. Setting a part in a vise, clamping it tight and starting someone else's program on a rented CNC mill is not 'building it yourself' in some people's opinions. The ATF is the only one that really matter tho.. lol

I tend to agree personally, but that's just my opinion. I have a coworker that I am going to be helping this weekend to finish his on a manual DRO mill. He wants to do it himself, not just stick it in a vise and push the button, so we'll do it old school by turnin the cranks by hand... probably use a jig kit to help make it easier for him (and me, the teacher).

There is a CNC mill right next to the manual DRO, but we'll let it sit idle this weekend, cause he can't write G-code yet..

 

[lawrencewendall]

I just finished one. Used a cheap harbor freight drill press. You just need a set of drill bits, and a 3/8 end mill. Was easier than I thought it would be. I am planning to do a few more soon!

Any recommendations on the end mill source?

 

[Boss94]

Any recommendations on the end mill source?

MSC or ENCO are good start.

 

[Pinecone]

From what I read. That's totally different. The CNC shop was charging money and the customer was just pressing the button...

Now If you own a CNC machine and doing your own lower from downloaded instruction.. I believe that is still OK.

IIRC, BATFE decided that even that was over the edge. If CNC, you had to program to be the manufacturer.

 

[sygata]

I had no problem with quentin lower ( http://quentin-laser.com/store ), tactical mashinning kit and ( http://www.tacticalmachining.com/ ) and grizzly G0463 mill ( http://www.grizzly.com/products/Mill-Drill/G0463 )