Who trains you matters.
What we set out to do
Company story — how Silverline started, and why
Training, certification and investigations sit together here for a practical reason: all three end in a document that somebody else relies on. A qualification record, a permit application, a case report. Work that is only as good as the record it leaves behind is the common thread.
Your instructor

Alex Duran
Lead Firearms Instructor
Alex Duran is a security professional with over 13 years of law enforcement experience and currently works as an Executive Protection Agent in Silicon Valley, providing security for high-profile private clients.
He is a California BSIS Certified Firearms Instructor and licensed Private Investigator. His advanced training and certifications include FLETC Active Shooter Response, NRA Law Enforcement Handgun Instructor, and NRA Law Enforcement Pistol-Mounted Optics Instructor.
Alex is also an avid shooter who participates in local USPSA and IDPA competitive shooting, using competition as another way to continually sharpen his firearms proficiency, discipline, and performance under pressure.
Licences and certifications
- California BSIS Certified Firearms Instructor
- Licensed Private Investigator
- FLETC Active Shooter Response
- NRA Law Enforcement Handgun Instructor
- NRA Law Enforcement Pistol-Mounted Optics Instructor
Alex brings his law enforcement, executive protection, competitive shooting, and firearms training experience into every course, with an emphasis on preparing armed security professionals for the responsibilities of carrying a firearm on duty.
- BSIS firearms instructor
- BSIS firearms instructor number
- Law enforcement experience
- 13+ years
What to expect
- Small enough classes that you get corrected, not just watched
- Range time with an instructor who will tell you what you are doing wrong
- Qualification records completed and filed as BSIS requires
- Straight answers about what a permit does and does not let you do
- No pressure to buy training you do not need

What we are building next
Alex Duran & Devin Stout
Alex Duran and Devin Stout are developing a more advanced security course that goes beyond the BSIS minimum standard and into the work an armed officer actually does.
It incorporates duty handgun work, movement, reloads, engaging multiple targets, and USPSA and defensive shooting concepts applied to a security context — the same competitive and defensive disciplines both instructors train in themselves.
Register interest