10 Things You Don't Know About The Sig P320 M17 & M18
The Sig P320 series, particularly the M17 and M18 military variants, is highlighted for its modularity centered around the serialized Fire Control Unit (FCU). This design allows for easy swapping of frames, slides, and calibers. Despite its widespread adoption and innovative features like tungsten-infused grips, the P320 has faced significant safety controversies and, according to the reviewer's extensive testing, has been one of the least reliable popular handguns.









