Glock 21 Gen 4
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.









