Advanced Firearms Training Built on Precision, Discipline, and Experience.
Our Mission
C.A.T. USA exists to help shooters develop true confidence through disciplined training, technical understanding, and precision-focused instruction.
We believe firearms training should go beyond simply hitting targets — it should build competence, accountability, and the ability to perform under real-world conditions.
To bridge the gap between science and skill, delivering advanced firearms training and ballistic understanding to the civilian world.
Santiago Rossignoli
Santiago Rossignoli is a firearms instructor, gunsmith, and ballistics specialist with a lifetime dedicated to precision shooting and technical mastery.
His background includes working as a professor of ballistics, where he trained students in the science behind accuracy, ammunition performance, and long-range shooting.
His approach is rooted in three principles:
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Safety above all
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Precision through understanding
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Confidence through repetition
Santiago specializes in: Long-range and extreme long-range shooting, Custom firearm builds and diagnostics, Ammunition reloading and ballistic development, Personalized firearms, and training for all experience levels.
His teaching style is hands-on, detail-oriented, and tailored to each individual — whether working with first-time shooters or experienced marksmen refining their skills.
Civilian Advanced Training LLC operates as a federally licensed firearms business (FFL), ensuring all services, transfers, and handling are conducted with the highest level of legal compliance and professional standards.