Gun stocks rose Monday following the deadliest mass shooting in American history late Sunday night. A gunman in a hotel room at the Mandalay Bay in Las Vegas killed at least 58 people attending an outdoor concert and wounded over 500 more.

Shares of Sturm Ruger (RGR) were up 6%, while American Outdoor Brands (AOBC), the company formerly known as Smith & Wesson, gained nearly 7%. Both stocks have tended to rally in the immediate aftermath of mass killings, which sadly have become more routine.

The Pulse nightclub in Orlando in June 2016. San Bernardino in December 2015. The Aurora, Colorado movie theater and Sandy Hook Elementary School in Newtown, Conn. in 2012.