This video from SHOT Show '19 features Mark Stone and Nelson Davis of Nighthawk Custom Firearms demonstrating their new Interchangeable Optic System (IOS) for the Firehawk 1911 pistol. The IOS allows for quick and easy swapping of rear sights. Tom Gresham of Gun Talk LIVE hosts the segment, which was sponsored. The video also promotes subscribing to Gun Talk Media's various channels and their website.
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