It would appear that Ruger was the first major manufacturer to take a look at the Kel Tec P3AT and realize the benefit and marketability of a small 380 ACP pistol. Thus they released the Ruger LCP to compete in the 380 pocket pistol market. It was and is remarkably similar to the Kel Tec P-3AT.
When the LCP hit the market it was nearly impossible to come by. If you were able to get your hands on one there was a good chance your next obstacle would be finding ammunition for it. The 380 ACP pocket pistols’ explosion in popularity along with the surge in firearm and ammo sales after the election created the perfect storm. That storm stripped almost every caliber from the shelves. However it was the 380 ACP ammo that was hit the hardest. Finally the supply and demand on 380 ACP returned to normal, and just in time as the pocket pistol market grew even more.
We are comparing the Ruger LCP with the following .380 ACP pistols:
Sig Sauer P238
Smith & Wesson Bodyguard 380