GLOCK 21 .45 ACP Full-Size Duty Pistol with Threaded Barrel – The Legendary Man-Stopper, Gen 4 Refined.

When you need proven .45 ACP stopping power that you can actually run hard, the Glock 21 delivers every single time. This full-size polymer-framed beast packs a serious punch with mild recoil and butter-smooth shooting, even through its standard 13-round magazine. Lighter than a steel 1911 yet built like a tank, the Gen 4 Glock 21 has only gotten better — more accurate, more controllable, and ready for whatever comes through the door.

The Picatinny rail gives you endless options for lights, lasers, and sights, while the modular backstrap system lets you dial in the perfect fit for any hand size. Reversible magazine catch keeps it lefty-friendly, and the Safe Action System, octagonal rifling, dual recoil spring assembly, and Glock MH3 night sights make this one of the smoothest and most reliable .45s you’ll ever run.

Maximum Home Defense. Maximum Confidence.

Whether you’re protecting your family or stacking steel at the range, the Glock 21 gives you the confidence that one well-placed shot gets the job done. Some shooters call it the smoothest .45 they’ve ever fired — less fatigue, faster follow-ups, and total reliability when it matters most.

Pray for the best. Train for the rest.

Key Features:

  • Caliber: .45 ACP
  • Capacity: 13+1 rounds
  • Safe Action® System with consistent trigger pull
  • Modular backstrap system for custom fit
  • Octagonal barrel rifling for enhanced accuracy
  • Glock MH3 steel three-dot night sights
  • Picatinny accessory rail (lights, lasers, sights)
  • Reversible magazine catch (lefty & righty friendly)
  • Dual recoil spring assembly for softer shooting
  • Gen 4 polymer frame – lighter than steel, built for duty

In stock now and ready to ship at 2AarmsandMedical.com.

Perfect for home defense, range days, or as your go-to duty gun. Grab yours before they’re gone.