Mud Test: Sig MCX Spear - US Army NGSW
The Sig MCX Spear, chosen by the US Army for its NGSW program, was subjected to an extreme mud test. While performing flawlessly with the dust cover closed, the rifle experienced significant failures to feed, fire, and eject when mud was introduced directly into the action with the dust cover open. This highlights a potential vulnerability in piston-driven systems compared to DI systems in extremely dirty conditions.


![The M4 vs M7 Sig Spear NGSW [feat. GBRS Group]](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FZZ3bbUw3skw%2Fhqdefault.jpg&w=3840&q=75)






