Why the Military Ditched 5.56 and 7.62 for a Caliber That Changes Everything!
The US Army is adopting the 6.8x51mm cartridge, branded as 277 Fury, for its Next Generation Squad Weapon (NGSW) program, replacing the 5.56x45mm and 7.62x51mm. This new caliber offers significantly increased range, lethality, and the ability to defeat modern body armor, driven by a hybrid case design capable of withstanding higher pressures. The NGSW program includes the XM7 rifle and XM250 light machine gun, both developed by Sig Sauer, featuring advanced optics and suppressor compatibility to enhance soldier effectiveness in modern combat scenarios.













