Product Description
And one kit to tune them all…
To simplify your ordering experience, our new P-Series Master Spring Set (P-MSS) replaces our previous DIY Action Upgrade Spring Kits.
P-MSS includes both our 17X and 19X mainsprings, uprated firing pin return spring, new-style competition safety lock spring, and our competition sear spring. Order the appropriate pin for your pistol separately from our menu if needed.
