Unboxing: Sig P320 Fire Control Unit (FCU)

In this unboxing video I open a Sig FCU (Fire Contol Unit) for a P320. This is the serialized part and the only part requiring an ATF 4473. Being a modular design, this allows you to build a P320 from a wide variety of custom parts to personalize your firearm and fit it into the role you need it for. In many ways, this is brilliant.

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