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johnwilliamson062 · December 7, 2012, 01:19 AM

I doubt anyone will be using this technology to manufacture firearms for mass retail sale. PIM is definitely a better process for that and I don't see this catching up in that regard even as this technology improves, but...

I think the injection mold press used for the AR lowers probably runs about $250,000, based on my limited knowledge of injection molding and guesses as to pressure and mold size. The mold then costs $35,000 for a "cheap" aluminum mold. Then look at EPA requirements for the operation, infrastructure requirements, etc. Especially power.

If you want to build one yourself, and many do, this option is a whole lot more attractive.

Making a model and then a casting is an interesting option. I wonder how a glass lower would handle 22lr..

December 7, 2012, 01:19 AM	#31
johnwilliamson062 Senior Member Join Date: May 16, 2008 Posts: 6,116	I doubt anyone will be using this technology to manufacture firearms for mass retail sale. PIM is definitely a better process for that and I don't see this catching up in that regard even as this technology improves, but... I think the injection mold press used for the AR lowers probably runs about $250,000, based on my limited knowledge of injection molding and guesses as to pressure and mold size. The mold then costs $35,000 for a "cheap" aluminum mold. Then look at EPA requirements for the operation, infrastructure requirements, etc. Especially power. If you want to build one yourself, and many do, this option is a whole lot more attractive. Making a model and then a casting is an interesting option. I wonder how a glass lower would handle 22lr.. __________________ $0 of an NRA membership goes to legislative action or court battles. Not a dime. Only money contributed to the NRA-ILA or NRA-PVF. Of course, you could just donate to the Second Amendment Foundation I was feeling pretty good, then I looked around and realized I am not swimming or on fire.