Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

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​	​	​	​	​
Name of Corporation		Jurisdiction of Incorporation or Organization		% of Voting Securities Held at December 31, 2024
​	​	​	​	​
CompX Security Products Inc.	​	Delaware	​	100
​	​	​	​	​
CompX Marine Inc.	​	Delaware	​	100
Custom Marine Inc.	​	Delaware	​	100
JZTB Realty LLC	​	Wisconsin	​	100
Livorsi Marine Inc.	​	Illinois	​	100

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