Washington (CNN) The U.S. Army general who investigated the 2014 Fort Hood shooting recommended in his final report issued Friday that the Army consider requiring soldiers to register their personally owned weapons with their command.

The report also concluded that there were "no clear warning signs" to indicate that Specialist Ivan Lopez would go on a rampage on the base, killing three soldiers and wounding 12 before taking his own life.

The gun registration recommendation comes in light of the fact that Lopez had purchased two weapons for his personal use ahead of the shooting, one of which was used in his April 2014 spree. The military has sporadically tried, unsuccessfully, to tighten its gun regulations.

"This impacts a commander's ability to maintain situational awareness over a service member and their actions involving a firearm that could be concealed and brought onto the installation for unauthorized purposes," according to the report. "In the absence of a system capable of identifying [Lopez] as a threat, and because the unit was unaware and unable to address the variety of stressors in [Lopez's] life, Fort Hood was not able to prevent the shooting."

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