TR-1upgrade® is a dynamic manufacturing company specialized in the distribution of technical components and accessories for sporting and defensive firearms at a professional level.

We operate as a Custom Shop focused on the development of precision-engineered trigger kits and firearm upgrades.

Our components—designed for the most widely used platforms such as Beretta, Glock, CZ and SigSauer ect.—are thoroughly field-tested to ensure maximum safety for professional use and optimal performance in sport shooting.

Among our standout products are the renowned TR-1 series trigger kits, trusted by competitive shooters worldwi ...