ar 80% build questions.

[christmasstorm]

I already posted this in general forum but was guided to the proper forum.

Ok, I have decided that I would like to join the 80% build group. However, I seriously know nothing about ARs and I am trying to learn but it seems like I cannot find a person to walk me through it a bit. I don't have any friends into the sport like I am so I am on an island... I was looking to jump in on the next San Diego build and I was wondering, to start, after I get the 80% and I do the 20% is there someone to hel p guide the 20% part? I dont want to screw it up.... AND what is a jig? I dont even know what all the parts are. It sucks and is embarrassing but here I am lost asking for directions. Sarcastic remarks will make me laugh along with you as long as you mix it in with instruction. I have thick skin.

[christmasstorm]

As far as the milling goes though, does someone show me how to mill? Is this something I need to have those skills to even bother with? I will check out YouTube.

[m16]

There's a few different ways you can finish an 80% receiver.

If you take it to a machine shop and rent their CNC, all you have to do is bolt the receiver down in their fixture and push the start button.

You can also use a manual mill, preferably with a digital readout - you'll need a blueprint of a lower receiver for this method.

Lastly, you can finish a receiver on a drill press but for this you will need a jig, the jig will have guide holes.

[christmasstorm]

Ah so, if I go the cnc route, I don't need the jig? Or would I still need the jig? The cnc way was what I had been planning to do. Thanks for the help

[m16]

Nope, the CNC will be programmed to perform all of the operations necessary to finish the receiver.

[Flintlock Tom]

I bought an 80% lower on-line and took it to these guys.

http://www.calguns.net/calgunforum/showthread.php?t=737532&highlight=CNC+manufacturing

They charge $75 if you bring your own 80%. Good experience.

[BajaBrad]

80% AR Lowers

You can buy the lower and the finishing jig from these guys. You can do everything yourself with jig after watching a few youtube videos.

https://www.bestqualitylowers.com