Captured Stainless Steel Guide Rod for Glock 21 (Gen 1–4) – With Variable Power Spring Options

Captured Stainless Steel Guide Rod for Glock 21 (Gen 1–4) – With Variable Power Spring Options
Built to last. Engineered to Outperform.
Upgrade your Glock 21 with a no-compromise stainless steel captured guide rod system designed for enhanced reliability and precision. Unlike the factory plastic rods that flex, chip, or crack under stress, this rugged stainless steel body delivers rock-solid lockup and eliminates flex for tighter, more consistent shot groups.
Key Features:

Rigid Stainless Steel Construction: No flex. No failure. Just flawless performance round after round.
Customizable Spring Weights: Fine-tune recoil and slide timing to match your ammo and shooting style. Easily swap springs using the removable tip.
Finish Options: Choose between raw stainless steel or black nitride for a tactical edge and corrosion resistance.
Frame-Safe Design: Precision fitment that protects your Glock’s polymer frame — zero wear, zero damage.
Field-Tested Durability: Trusted by shooters across the country. Built to handle thousands of rounds without fail.
Lifetime Reliability Guarantee

Product Specs:

This assembly includes:

303 Stainless Guide Rod
Retention Washer
4 Guide Rod Springs (15#, 16#, 17#, 18#)
Stainless & Black Tip Screw

OEM Spring weight is Apx. 17 Pounds.
The following springs are included:

15# Flatwire Recoil Spring
16# Standard Coil Recoil Spring
17# Flatwire Recoil Spring
18# Flatwire Recoil Spring
100% Made In The USA!

For best results when changing spring weights, we recommend applying Blue Loctite to the hex screw threads. This ensures a secure hold with easy disassembly when needed.