PCC (Pistol Caliber Carbines), i.e. semi-auto rifles in 9mm pistol caliber, are very much in vogue. Every self-respecting manufacturer has corresponding, high-performance series models in its program. Individual custom conversions go one step further, and the evolution culminates here in the new 3GR Tec9 Pro 125 model from 3G Sports, which all4shooters.com presents in detail in this article.