Overview
MPP produces high-precision aerospace and commercial components, including tube and duct assemblies, small structural castings, and flex joints. It uses investment casting (lost-wax) to form molds: a wax pattern is covered with a ceramic shell, molten metal is poured, and the part is finished for heat- and vibration-resistance. Its GE Aerospace–SeaCast heritage, AS9100 certification, and ongoing investments (2022 expansion and 2025 modernization) give it proven aerospace experience and capacity to serve narrowbody and widebody engines as well as military marine applications. The goal is to support the aerospace supply chain by delivering high-quality, complex parts efficiently and expanding manufacturing capability to meet growing demand.
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Simplify's take
What believers are saying
- GE Aerospace invested $2 million in March 2025 to boost productivity.
- Montana officials said 2025 capacity gains could support 60 more hires.
- Governor Gianforte's 2025 visit and site publicity reinforce customer and talent credibility.
What critics are saying
- An NLRB case closed in 2025 signals labor tensions inside Butte operations.
- GE's 2025 modernization spend concentrates dependence on one customer and one facility.
- A GE order cut would hit MPP's volume fast, threatening the joint venture's survival.
What makes Montana Precision Products unique
- GE Aerospace and SeaCast anchor MPP's aerospace supply chain position in Butte.
- Its 2022 expansion created 97,000 square feet for castings, ducts, and flex joints.
- Investment-casting expertise supports narrowbody, widebody, and military marine engine programs.
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