The Sig Sauer MPX K 9mm Semi-Auto Pistol with 4.5" barrel (PMPX-4B-9-35) is the compact "K" (Kurz/Short) variant of Sig's renowned MPX pistol-caliber carbine platform, featuring a 4.5-inch barrel in a pistol configuration. The MPX uses a closed, fully locked rotating bolt and proprietary 9mm magazine, providing rifle-like reliability in a pistol-caliber package. The MPX K is an outstanding personal defense weapon (PDW) platform, suppressor host, and competition PCC. Includes a 35-round magazine. Requires FFL transfer as a pistol; SBR configuration requires NFA Form 1/Form 4.
- Brand: Sig Sauer
- SKU: PMPX-4B-9-35
- Caliber: 9mm Luger
- Barrel Length: 4.5 inches
- Configuration: Pistol
- Magazine: 35-round included
- Action: Semi-automatic, closed rotating bolt
- Best For: PDW, home defense, suppressed 9mm, competition PCC
FIREARM: Requires FFL transfer. Boss Firearms is a licensed FFL dealer.
