NDZ Glock 20, 21 Gen 1-3 Guide Rod Assembly

Designed to fit Glock Gen 1-3 models: G20, G20SF, G21, G21SF.

Drop the plastic. Upgrade your Glock G20 or G21 with the NDZ Stainless Steel Guide Rod Assembly. Designed for power calibers and high-stress environments, this upgrade eliminates guide rod flex, tightens lock-up, and delivers consistent, reliable cycling; even under full-power 10mm or .45 ACP loads. This new style features a precision-machined guide rod screw, allowing for tool-free spring changes and reinforced tip strength. Swap recoil springs to tune your setup for carry, competition, or specialty ammo; all without replacing the entire assembly. Built from solid stainless steel, this rod won't chip, warp, or fail like factory plastic rods. Includes a premium ISMI recoil spring made from aerospace-grade alloys, heat-treated and shot-peened for maximum durability. Whether you're training hard, carrying on duty, or building a custom Glock, this guide rod is built to perform. Built for big bore Glocks. Upgrade to NDZ stainless steel and run it like you mean it.

Features:

• Machined Guide Rod Screw: Secure, rugged design for quick and repeatable spring swaps.
• Rigid Stainless Steel Construction: Eliminates flex, improves slide lock-up and accuracy.
• ISMI Premium Springs: Aerospace-grade alloys, stress-relieved for endurance and consistency.
• Drop-In Ready: No modifications required; installs in minutes.
• Frame-Safe Geometry: Engineered to work safely with Glock polymer frames.
• Color Options Available: Choose from anodized screw tips to match your build.
• Trusted by Professionals: Field-tested by law enforcement and competition shooters worldwide.
• Lifetime Warranty: Designed and built in the USA for lasting performance.

Important: For first time use or when changing out springs it is recommended to use Blue Loctite on the hex screw threads. This will provide a firm hold and still allow easy removal when necessary.

See our complete line of Glock G20 Products here

Note: NDZ always recommends any part be installed by a qualified and trained gunsmith. NDZ promotes the use of safety practices and gear when working on any firearm.

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.