CNC Milling an AR-15 Receiver From Scratch Chapter 7: Magwell and Buffer Tube

This video completes the milling videos. I finish the buffer tube and magwell. All that remains is to tap the buffer tube, drill / tap the grip screw hole, and install the lower parts kit.

Category:

Science & Technology

Tags:

• AR-15
• CNC
• Lower
• Billet
• ar
• AR15
• X3
• Seig
• Milling
• Machine
• CAD
• CAM

[PoliticalSmackdown]

what mill are you using?

[kingjamez80]

@PoliticalSmackdown Sieg X3 with cncfusion conversion kit.

[silver760]

A truly commendable job,from experience of day in day out manual machining of alloy blocks into hydraulic valve blocks there were a number of ways you could have saved yourself a considerable amount of time and effort.I'm surprised you didnt have any trouble with your tooling picking up milling alloy dry,the best cutting fluid for alloy is kerosene or light oil for best finish and tool longevity.You certainly persevered on this job,well done!!

[kingjamez80]

@silver760 Thanks! I know that I could have done things better. This project was my first machining project ever, so I am very much a novice. I learned a lot though and would really love to one day learn from a mentor on the right way to do things. Right now the Internet is my mentor, and we all know that truth on the web isn't always so truthful.

[silver760]

@kingjamez80 I was careful as I didn't know ability level.I didn't want to teach another how to suck eggs or bash a novice who is learning. Having worked in the engineering industry and machining for a number of years sure teaches you the right and wrong way to do things.The management always want things out the door in the fastest time possible at the highest quality,you learn how to make such things in the quickest easiest way to top spec.The tricks of the trade are rarely written down though!

[drewdane40]

@9o3 A homebuilt lower doesn't need to be serialized or registered, but it may only be made for personal use, so it may never be sold (though I'm sure someone will argue that point.)

I am not a lawyer. Check your local laws. Your mileage may very. Offer void where prohibited. For entertainment purposes only. Keep out of the reach of children. Past performance is not a guarantee of future results. Do not leave children unattended. May cause drowsiness. Use caution when operating heavy machinery.

[9o3]

@kingjamez80 so you only need a manufacturing license to sell lowers but not to machine them for an ar build? What about the serializing and registration of it?

[kronenbitter85]

hello im looking in to getting a set up like this is there a way you can send me the link or give me the name and all the details i have every thing for the pc

[kingjamez80]

@TheTNPFBI Ah.. I understand now. The magwell method that I used is very similar to how I'd do it on a standard AR15 forging. You need someway to hold the forging vertically (I made softjaws). The method I used is basically from the Ray-Vin guide.

[TheTNPFBI]

@kingjamez80 I agree but I was asking more from a technical standpoint because I'm looking into doing this myself.