Posted: 3/13/2009 1:30:59 AM EDT
| Has anybody finished one of these 80% receivers that are out? Iv been checking it out and it seems pretty easy if you have the basic tools like drill press and bits. Also like the idea of having a blank receiver with no roll marks or any of that crap. Or the ability to add your own serial number and engravings. |
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This looks like the easiest ones I've seen online. http://www.cncguns.com/tooling.html
Haven't done any orders or builds yet. I don't have a drill press, and have too many other things I want to buy just now. I would be interested in watching/helping/learning if you decide to try this out. I haven't done any machining, but it doesn't seem like a drill press should be that hard to use with some minimal care and going slow. If I ever get time and money I'll let you know how they build. Scott |
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I bought one of Justin's AR drill jigs––it's a well-made little chunk of aluminum, ships fast, and seems to be quite accurate and easy to use. That said, I don't think the jig would last very long if you don't have at least a drill press and some basic machining skill (e.g., a dial indicator and clamping to true up the jig to the drill press axis).
To build my lower, I ended up just using my Grizzly mini-mill and the AR-15 plans available online, and scratch-building from a billet of blue HDPE. In general, if you have a laser printer to print templates, and a mill to keep everything clamped and aligned, you don't really need the jig. Still, I think the drill jig might make a handy fixture for milling up a 0% lower forging, though you almost certainly need a mill to do this. One nice part about the AR design is the dimensions of the fire control pocket area really don't need to be that precise, as long as the FCG parts fit inside, and the hammer and trigger pin holes are in the right places––but annoyingly, the lower forgings available sure don't look like they leave much wiggle room on the FCG pocket dimensions. Anybody in the Fairbanks area that's finishing up an AR receiver and needs to tap the buffer tube hole (1 3/16" x 16tpi) is welcome to borrow my tap for free––just PM me! |