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I included a shortened version of Mussy's extension tube, that is hollow for carrying batteries etc.
You may print the one-piece to avoid extra connections. All models require at least one of Mussy's buffer tube nut. Recommend this one vs. a metal one to avoid scratching the finish on the receiver! It can be downloaded here: https://www.thingiverse.com/thing:3210087
All models are oriented for optimum print quality.
Use supports "touching buildplate only". Supports in the threaded areas will result in a bad time cleaning them up!
Brim is recommended.
Infill - use at least 4 walls/perimeters with at least 50% infill
Uses a 5/32" x 1.5" roll pin, and a 1" spring, both sourced from the local ACE Hardware! Install the pin from the bottom. You may need to drill out the hole with a 5/32" drill bit. The pin hole folding extension will obviously need to be enlarged bigger. I used an 11/64" drill bit and it worked perfectly - no wobble!
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