Shooting 5.56 out of a .223 rifle...
This guide, presented by FrenchGunGuy, addresses the common question of shooting 5.56x45mm NATO ammunition from a .223 Remington rifle. While generally not recommended due to pressure and chamber differences, the video highlights that specific firearms like the Heckler & Koch MR223, built to HK416 specifications, can safely handle both calibers. The demonstration emphasizes the importance of understanding your rifle's specific chambering for safe operation.











