[jim brady]

Not one of those "must do" projects - just a "maybe" project. Considering ordering an aluminum 80% lower. I'm not a "poly" fan - if I do this I want to go with aluminum. I've seen the drilling jigs, and that is something I can do with my little bench top drill press. The thing that I don't want to do is order a receiver blank and screw up the milling to remove metal for the trigger recess inside of the receiver. I'm not a machinist.

My goal would be to create a receiver to assemble into an A2 rifle with the A2 sights and 20" rifle barrel.

Here is my question: are there any legal troubles with trying to find someone who would mill out ONLY the interior of the receiver - if I shipped the receiver without any of the action holes drilled out? That way neither of us would be shipping or receiving a complete receiver - just the blank with the action recess milled out. I could then finish making the blank myself into an AR lower receiver with a drilling jig.

Any thoughts or suggestions as to who I could contact to do this milling? I don't want to spend $600+ or more for a small milling machine that I'd never use again. Thanks in advance - Jim

 

[zant]

As long as you are standing next to the machinist,you'll be fine.DC TechBranch says you can have your suppressor baffles drilled by someone else as long as you are right there,still in possession.

 

[jim brady]

As long as you are standing next to the machinist,you'll be fine.DC TechBranch says you can have your suppressor baffles drilled by someone else as long as you are right there,still in possession.

Sounds screwy, but if those are the rules that's it. I guess the thing to do would be to look for a machine shop here in the Colorado Springs area who could mill out that portion of the receiver to accept the sear, trigger and safety whilst I stand by and watch. Still screwy (not your rules or mine) - but thanks for the advice and help! I might just do this when I get a few dineros ahead.

 

[Grizzley1]

I had to thread a barrel on a sawed off shotgun for remchokes, perfectly legal as long as the owner was in the shop with his paperwork. I asked him it he thought chokes would help that 10 inch barrel pattern better, and he laughed and said it was for the can he was going to install.

 

[Hawg]

Finding somebody willing to do it might be a problem.

 

[shootbrownelk]

Sounds screwy, but if those are the rules that's it. I guess the thing to do would be to look for a machine shop here in the Colorado Springs area who could mill out that portion of the receiver to accept the sear, trigger and safety whilst I stand by and watch. Still screwy (not your rules or mine) - but thanks for the advice and help! I might just do this when I get a few dineros ahead.

What will a machine shop charge you to do the machining & set-up? You'd be better off just buying a good jig IMO (5D tactical) and do the machining yourself. There are videos on YouTube explaining the process, it's pretty easy. Take it slow and you'll have good results. You probably won't stop after just one Jim.

 

[Smoke]

From what I understand you have to do everything yourself from the first scratch to the final finish on an 80%. You can do it on a drill press but only if you stop the chuck from falling out. Drill press chucks are on a taper stem that will not take any side loading like cutting with an end mill type cutter. An easy way to stop the problem is to super glue it in.
Then I would suggest buying a jig & XY vice to hold the jig with receiver to move the part + or - to cut the aluminum out of the trigger pocket.

 

[Old Syko]

I agree with Smoke. Besides, a large part of doing an 80% is being able to do it yourself. If you have a solid drill press and are willing to take your time making light cuts it's a simple job. A solid XY vice works just fine since the milling cuts you're going to make are only nominal. On the other hand the holes you need to drill must be precise which is why most use a jig.