Centennial Defense Systems dual recoil springs for the Gen 4 Glock 20 are manufactured from high quality stainless steel and are heat treated, shot peened and stress relieved for maximum durability. Our springs are designed for CDS guide rods but may work with other brands. Like all Centennial Defense Systems products, our springs are designed, manufactured, finished, and assembled in the USA.
Fits CDS Guide Rod Models: Gen 4 G20, 21
RECOIL SPRING WEIGHT BY MODEL
Glock Models - 17,17L,20,21,22,24,31,34,35,37
Glock Factory Spring Weight Is - 17lbs
Glock Models - 19,23,32,38
Glock Factory Spring Weight Is - 18lbs
RECOIL SPRING WEIGHT USAGE
11-13lb Springs are mostly used for competition shooting, or if using a suppressor.
Note: Lighter weight recoil springs have a faster recoil time and allows for quicker follow up shots, however may lead to cycling issues depending on ammo
14-16lb Recoil springs are for reduced power ammunition loads
17-18lb Recoil springs are Glock factory weight recoil springs
19-24lb Recoil springs are for heavy loads and +p or +p+