In 2013, the National Guard reported a suicide rate that was substantially higher than both the general population and the active duty component of the United States military. The prototypical National Guard suicide decedent appears to be a young male firearm owner not currently deployed who dies using his own gun. Prior research within the military has revealed that soldiers are unlikely to seek out or engage in mental health services. In sum, current best practices in suicide risk assessment are poorly equipped to identify the individuals most likely to die by suicide. This study aims to examine the acceptability, feasibility, and utility of a single lethal means counseling session as part of a suicide prevention approach targeting demographic groups overrepresented in National Guard firearm suicides. The study will utilize a 2x2 Factorial Design: Intervention (Lethal Means Counseling, Health and Stress Control) X Gun-Lock (Provided, Not Provided). Participants will be 232 firearm owning male National Guard personnel under the age of 30. Lethal Means Counseling comprises education on risk factors for suicide, information on preventative resources, and encouragement to store guns safely and to temporarily remove guns during high risk periods. The Health and Stress Program is designed to control for effects of general mental and physical health education in the active condition. Each condition utilizes a motivational interviewing framework. The overarching goal of each hypothesis is to examine the extent to which gun owning young male National Guard personnel at varying levels of suicide risk are willing to engage in safety planning and find means safety approaches acceptable