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yosemite
07-14-2010, 23:46
Just a feeler,how many builders would go from a 383 aluminum high pressure die cast clamshell AR lower with all the heavy work done, could be finished wit drill press and hand tools, standard ar lower parts would fit, and all standar uppers too, what do you think these unfinished lowers should sell for?, currently working on this tool project, test receivers have bee made and tested extensively, but now working on marketing and secondary operations, I will have some pictures soon, e mail if interested, remember these are high strength aluminum alloy castings, not folded and rivetedtin, or cheap cast pot metal, they have detail far beyond a forging or investment casting

ShooterJM
10-27-2010, 10:31
I might be interested. My issue with the 80% lowers on the market now is that I don't understand paying more for an unfinished lower, then I do for a finished and coated lower.

Jherexx
11-15-2010, 17:19
I might be interested. My issue with the 80% lowers on the market now is that I don't understand paying more for an unfinished lower, then I do for a finished and coated lower.

Ditto, although you may have a better market for those who want to complete pistol caliber lowers and not utilize a mag block.

BPTactical
11-15-2010, 21:50
Coming from a machining background I can tell you that something more accurate than a drill press is required. Plus you had better be able to read a print working from an abstract zero.
Can you say coordinate geometry?
I have seen receivers that were 80 percent finished that were finish machined by accomplished machinists. They turned out decent but with only manual machines it involved a good bit of work.
My time on a machine makes the additional cost of a complete lower vs 80 percent seem cheap.(To me anyway)