Prototype multi-caliber lower for the SCAR rifle

    “Troubleshooter” is a gun designing genius who hails from Germany. His latest creation is a prototype lower receiver for the FN SCAR rifle.

    STANAG 5.56mm magazine.
    7.62mm NATO M14 magazine

    Troubleshooter has to work within Germany’s firearm laws. He used an AGM airsoft SCAR replica for the upper reliever and built his own replica bolts and barrels.

    7.62x39mm magazine
    Magpul PMAG
    5.45x39mm magazine
    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!