22LR ECM Rifling, Chambering and Boring pack - 4 inch to 20 inch

This is my ECM pack now with extensive documentation. Open the .md or .pdf files with a supported reader. I'd like other people to help me beta test this. It's currently 22LR only but the system is modular so it can be extended. For troubleshooting/help go here: https://matrix.to/#/#aussie-2a-inc:matrix.org LBRY Tags: ecm; rifling; diy; gun cad; fgc22