fosscad-repo-frozen/Misc/AR-15-80_Percent_Lower_Receiver_Milling_Jig-Buildtoshoot/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

Print

• 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.