In terms of controls, Shadow Systems has also built in a few upgrades. The trigger shoe is made from aluminum and features a clean break measuring just under 5 lbs.

This Shadow Systems CR920, a polymer-frame, semi-automatic, 9 mm Luger-chambered micro-compact handgun, is a complete carry-ready offering exclusive to Davidson's Gallery of Guns.

CodeIsFreeSpeech.com is another website which distributes blueprints for guns like Berettas, AR-15s, AR-10s, Rugers and the gun made entirely from 3D printing, the Liberator. Facebook's ban ...