Designed for the US Army's Next Generation Squad Weapon Program in 2019, the new .277 SIG Fury delivers magnum velocity and muzzle energy in a short-action size. It's an exciting new round, featuring SIG SAUER's innovative Hybrid Case Technology: a steel case head and brass case body connected by an aluminum locking washer to support the round's exceptionally high chamber pressure of 80,000 psi. The .277 SIG Fury (or 6.8x51mm Common Cartridge) significantly outperforms standard ammunition in similar calibers, with decreased bullet drop and increased energy on target. It's the future of small-weapons combat, and it's available right here for a limited time. If you've been itching to get your hands on the truly innovative new round, now's your chance to do it. PLEASE NOTE: Because the .277 SIG Fury round is loaded to 80,000 psi, which is significantly higher than almost any other commercially available round, we recommend that you only fire the round out of firearms specifically designed to handle the intense pressure.