AR15 vs Car... is G9 5.56 actually barrier blind?
This video from Farewell Firearms Training tests the barrier-blind capabilities of G9 5.56 54-grain solid copper hollow-point ammunition against standard 55-grain FMJ rounds when fired through a car windshield. The test demonstrates that standard FMJ rounds fragment significantly upon impact with glass, leading to poor terminal ballistics, while the G9 solid copper rounds largely maintain their integrity, suggesting superior performance in barrier penetration scenarios.












