The project is a cornerstone of the community. Its release was intended to make gun control "obsolete" by proving that technology can bypass legislative restrictions on firearm manufacturing.
: This is commonly used to denote a second major revision or version of a product, following the Roman numeral for 2 (II). It implies an upgrade or significant changes from a previous version, often referred to as "Mark II" or similar.
Without specific context on what Fgc-9-mkii-rev5.zip contains or what it's for, consider the following:
: If the project involves 3D printing or CNC machining, the archive might contain CAD files (in formats like STL, STEP, or OBJ) for the MKII version of the FGC-9, revised to the fifth iteration.