Wheaton Arms Heavyweight Guide Rod Assembly, Stainless, Fits Glock 20, 21, 40, 41 Gen 4

Wheaton Arms Stainless steel 1pc guiderod helps prevent spring bind and adds static weight to the front of the pistol. Flat wound recoil spring is designed for the rigors of competition with the reliability of a duty weapon.

Comes with a 20lb flat wound recoil spring or optional 22lb recoil spring. This spring is designed to reduce recoil & muzzle flip by reducing the reciprocating mass of the slide assembly. This is the lightest recoil spring recommended for the Glock 20, 21, 40, 41 Gen 4 to maintain reliability. If the recoil spring is any lighter, the slide can unlock during the firing sequence causing a light primer strike or failure to fire.

Fits Glock models 20, 21, 40, 41 Gen 4

Installation video below:

https://www.youtube.com/watch?v=0WiMEw7WGms