Rob Curtis got the scoop on a new SIG Personal Defense Weapon. The SIG MCX, as Rob speculated it will be named, is the big brother to their recently launched SIG MPX pistol-caliber carbines. Internally all we know is that it uses a AR-15 style rotating bolt and a short-stroke piston. The upper will be compatible with AR-15 lower receivers. Externally we can see that it is integrally suppressed and does not have a buffer tube.

    Steve Johnson

    I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!