NATO Accessory Rail and attachments for a Blowgun

I'm posting rails and attachments for my son's Cold Steel Big Bore blowgun. The first piece is a double-sided NATO Accessory Rail ( STANAG 4694 ).
The rails were created using an OpenJSCAD port of the OpenSCAD code from https://www.thingiverse.com/thing:2801254

More parts to come!