Given the laws regulating the components of firearms, a Glock frame that is customizable is exactly what FOSSCAD needs. The system relies on a DIY metal rail system which is added to a printed frame .

This is the Glock 26 Gen 3 Pistol Frame and DIY Rail System by FreeMenDontAsk. The system relies on a DIY metal rail system which is added to a printed frame. Reference the G26 Front and Rear Rail ...