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Firearms Technology

Fun with the Sig P-320 Fire Control Unit: EXO ONE Multi-Caliber Exoskeleton

April 18, 2018 by Mark Miller Leave a Comment

So it begins. The Sig 320 is going to change the way we think about firearms. The EXO ONE (X01) is a patent-pending multi-caliber exoskeleton for the Sig Sauer P320 Fire Control Unit (FCU). In 20 seconds, you can change your 320 pistol into a legal, bigger, more capable pistol with no FFL and no tools. This is just the beginning.

The X01 body is injection-molded with glass filled nylon. It can accept SIG® MPX//MCX buttstocks and arm braces.  This is a pre-release concept. Read more at firecontrolunit.com
This is the first of many designs. There is no reason to stop at a modest pistol conversion. There will be soon be rifles and carbines. Remember this?
Ghost Guns is going to make 80 percent Sig 320 Fire Control Groups. Look for firecontrolunit.com and many other companies to produce all manner of parts and accessories for the 320. I don’t know where this is going but it is going to be fun.
Photos courtesy of firecontrolunit.com

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About the Author

Mark Miller is a Green Beret who served in Afghanistan and a number of other live fire locations. He's a poet-warrior in the classic sense, a casual hero and a student of science.

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