BG Defense M4 for Sale

The BG Defense M4 is a semi-automatic 5.56×45mm NATO rifle in the AR-15/M4 pattern, distinguished by factory barrel lengths from roughly 7.5 to 14.5 inches. Its standout design feature is the specific lineup of approximately 7.5, 10.5, 11.5, 12.5, 13.7, and 14.5 inch barrels direct from the factory.