.380, essentially a shortened 9mm round has seemingly taken the gun world by storm. KelTec and a few others offered .380 pocket guns for a while. But the success of Ruger’s LCP seems to have sent waves through the manufacturing industry – with dozens of manufacturer’s releasing .380 firearms. The following post over at Guns & Holsters seems to hint at Smith & Wesson’s M&P being the next firearm to be released in a .380 version.
While many will comment on the .380 having sub-par ballistics and poor performance compared to other calibers. The improvement of bullet technology has led to an increased viability of this round. It may not be best choice for defense. But it has gained popularity as THE pocket gun caliber.