The Glock 21 Gen 4 introduces a dual recoil spring assembly and an enlarged, reversible magazine release, aiming to improve recoil management and user ergonomics. While the modular backstrap system offers grip customization, its necessity is debated. The Gen 4 maintains compatibility with Gen 3 barrels and offers reliable combat accuracy, though the dual recoil spring's impact on felt recoil is minimal.
This review of the Glock 23 Gen 4 in .40 S&W by Hickok45 highlights its reliability and the advantages of the Gen 4 platform. Key features discussed include the Rough Textured Frame (RTF), reversible magazine release, and Modular Backstrap System (MBS). The video demonstrates its accuracy at various distances and its 'perfect' compact frame size, concluding with positive remarks on its consistent performance and reduced felt recoil due to the dual recoil spring assembly.
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