Built by people who run the platforms

SJ Manufacturing designs and builds firearms components in-house. We focus on the parts that keep proven, widely-fielded platforms running — and we control the full process, from engineering through machining, finishing, assembly, and inspection.

That vertical integration is the point: it keeps our tolerances consistent, our supply steady, and the distance between a real-world problem and a manufactured solution short.

Operating principles

Combat · Competition · Defense

Every part we make has to earn its place across all three. If it can't hold up to hard use, deliver on the clock, and be trusted when it counts, it doesn't ship.