/r/fosscad
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I know I know, rails down, but I did not like how the internal structure turned out after removing supports with rails down, so tried again rails up, and really please with the results. Link to whos settings I used will be posted below.
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I have a 20" barrel and a dream... Add another project to the backlog. I've wanted to design my own upper/lower for a while now for an AR9/MP5 built, but bought a factory MP5 mag lower. Now I have an excuse to make a paddle release lower. Quick mock up as a proof of concept for scale.
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