DOUBLE STAR STRONGARM PISTOL BRACE When firing a PDW-style pistol, control is imperative. DoubleStar introduces the new Strongarm Pistol Brace. Machined from billet aluminum, the Strongarm provides a rock-solid plate that fits securely on most AR-style pistol buffer tubes with two clamp screws. For added control, the Strongarm also comes with a Velcro strap to secure the pistol to your forearm for easy one-handed shooting.