What happened?AMMO shares (NASDAQ:POWW), rose 11.4% Wednesday after the company reported fiscal fourth-quarter earnings. Sales jumped 409% over the previous year, while adjusted profits jumped 296%.What are you waiting for?The firearms market is still booming, with gun manufacturers Smith & Wesson Brands, (NASDAQ:SWBI), and Sturm, Ruger, (NYSE:RGR), seeing record sales. Manufacturers are struggling to keep up with the increased demand for ammunition as a result of the sale of firearms.According to the National Shooting Sports Foundation 8 million people purchased their first firearm last year. This is why AMMO states, "Demand fundamentals on the US domestic ammunition markets are exceedingly strong, and we see no sign of slowing down."What now?AMMO plans to build a new facility in order to satisfy the growing demand for ammunition. It has begun construction on a state-of the-art facility that it expects to be operational next year.Gunbroker.com is also a recent acquisition. It's the largest online marketplace selling firearms, hunting, shooting and other related products. It does not sell products but offers an exchange service for third-party vendors.AMMO's guidance for fiscal first-quarter sales of $41million includes two months of operation of Gunbroker.com. It claims it will make its first ever quarterly profit.