by David Crane david@defensereview.com Safety Harbor Firearms is currently manufacturing and marketing a side-mounted magazine-fed bolt-action .50 BMG rifle, called the Ultra Mag 50, that DefenseReview would like to learn more about. Developed by Dennis Cheney and Dave Finnie, the Ultra Mag 50 .50 Cal. rifle utilizes an AR-15-based lower receiver and lightweight upper. The Ultra Mag 50 .50BMG rifle …
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