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README.md
80% AR-15 Lower Receiver Milling Jig
Author, Testing & Technical Author
buildtoshoot
Version
1.0
Description
This is the 80% AR-15 Lower Receiver Milling Jig by Buildtoshoot. This is a self-aligning jig which allows one to finish 80% lowers from a variety of manufacturers using only a drill press and a few common tools.
Mill following the instructions from SpecSheets/Jig_Manual_80_Percent_Arms.rev1.1S.doc.pdf skipping the drilling step since i didnt make a drilling plate.
Follow me on Instagram @buildtoshoot for more shenanigans. https://www.instagram.com/buildtoshoot/
Hardware
Sides
- 4 Socket cap, Stainless steel 18-8, 1/4"-20 x 2-1/2" https://www.boltdepot.com/Product-Details.aspx?product=4889
- 4 Hex nuts, Stainless steel 18-8, 1/4"-20 https://www.boltdepot.com/Product-Details.aspx?product=2563
Top
- 4 Metric socket cap, Stainless steel 18-8 (A-2), 5mm x 0.8mm x 20mm https://www.boltdepot.com/Product-Details.aspx?product=6410
- 4 Metric hex nuts, Stainless steel 18-8 (A-2), 5mm x 0.8mm https://www.boltdepot.com/Product-Details.aspx?product=4775
- 1x LeftSideWall.STL
- 1x RightSideWall.STL
- 1x TopShelfPocket.STL
- 1x TopShelfTrigger&Shelf.STL
- 2x spacer.stl - These go on the 1/4 bolts on the bottom of the jig to help mitigate flex while in the vise.