XM7 Talk with Professor Shane!
Professor Shane, a subject matter expert at Gun For Hire Range, discusses the U.S. military's transition from the M4 to the SIG XM7 (M7) rifle. He expresses skepticism regarding the platform change, highlighting concerns about increased recoil, reduced ammo capacity due to heavier 6.8x51mm rounds, and significantly decreased barrel longevity compared to 5.56x45mm NATO platforms. While acknowledging the 6.8mm cartridge's effectiveness in the M250 machine gun, he questions its suitability for the M7 rifle, suggesting that higher hit probability is achieved through greater ammunition availability rather than a higher-pressure round with a shorter barrel life.












