As previously reported here on TacticalGearMag.com, Glock announced it would introduce the G21 (.45 Auto), G32 (.357) Gen4 models at the 2012 SHOT Show in Las Vegas.
Known for their improved ergonomics, the Gen4 pistols utilize the Multiple Back Strap (MBS) system to enhance the grip of the pistol. Each Gen4 comes with three difference grip options: a short, medium and large size, enabling the pistol to adapt to each individual shooter's hand size with the removal and insertion of a single pin. In addition, the grip has also been given a new Rough Textured Frame (RTF) to increase grip traction.
The Gen4 magazine release catch has been enlarged and is reversible for the ambidextrous shooter. To utilize the interchangeable magazine release feature, the Gen4 magazines have two notches cut on each side of the magazine body, allowing users to switch access of the catch to the left or right side of the pistol with no additional parts.