Building a billet lower...

Armedsask said:
How do you figure? It's of my own design.

I'll get a serial number the same as anything else. Put one on and register it.
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I was under the understaning you were basically copying the original design of the plastic lower. wouldnt it be patented or copyrighted of some sort?
 
No, I'm not copying the plastic lower. I'm making an aluminum receiver that will fit AR180B uppers. The plan, if you had read, was to make my own proprietary upper as well. Aren't AR15's patented? How can all these guys make their own? Is long as I'm not selling them there really is no patent infringement issue. Not that there is any way as it is my own design.

For any one that cares, still haven't started cutting metal yet. Thing are going slower than I had hoped. :(
 
Armedsask said:
For any one that cares, still haven't started cutting metal yet. Thing are going slower than I had hoped. :(
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Don't worry, they always do on this sort of project. The onlytime things go fast is when your screwing somthing up but aren't aware of it yet:D Slow, and plan every step, that's the ticket
 
from what I understand, any public patent can be duplicated in a one off for personal use. the patent is in public domain.

using the patent to make money or for commercial purpose is where the line gets drawn.

f7
 
As far as serial numbers go you can choose your own as long as it is unique and does not conflict with any other in the CFC's system. Try a letter and number combination.
 
Dr.Lector said:
No, the ones in my pics are broached.
Well, nothing I posted in here is illegal, but if you feel more confortable to PM me,
go ahead, I'll try to respond when I have time.



All the big manuf in US I know of, do the mag well by broaching.
The tooling differs from case to case.
Keep in mind that there are almost 150 companies who are selling AR in States.
Some of them do all of their own machining, some not.
Colt used to do everything on their receivers. Not anymore, now they contract out.
STAG has almost everything done by another companies. So does RRA, so does Wilson and many, many others.
The progressive broach used by the company who does machining for some of the above
is about 4 feet long, has 84 cutters on each side and works in one pass (maybe less
than 2 seconds to finish one well).
Other companies use one single cutter double-sided less than 3” long
that works on 6-10 passes to finish one well.
There are many types of broaches that can be used on wells.
On AR15’s in 5.56, DlaskCo is making the well by CNC broaching, which is ok for small to medium productions.
If they used to EDM (and on what type of mag wells), I don’t know, you have to ask them.
I know of EDM done in small production runs, but not for DlaskCo.
It’s useful in firearms when cutting conic (tapered) holes or complex 3D cams.
I had EDM work done for me by other people, but I don’t know much about the process.
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I'll take 3 please :D
 
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