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NDZ Glock 17, 22, 31, 34, 35 and 37 Gen 4 Guide Rod Assembly No-Flex Stainless Steel Recoil System Replaceable ISMI Springs • Removable Hex Tip • Gen 4 Adapter Ring • Made in USA COMPATIBILITY Designed to Fit: Glock G17, G22, G31, G34, G35 and G37 Gen 4 models. Gun Generation: Gen 4 only. Does Not Fit: Glock Gen 1, Gen 2, Gen 3 or Gen 5 models. Important: Verify both your Glock model and generation before ordering. This assembly is designed specifically for the listed Gen 4 models. Select the Correct Configuration
This product is available as the guide rod alone, with an individual ISMI recoil spring or as a tuner pack containing all available spring weights offered in this listing. Review the selected configuration, spring weight and finish carefully before completing your purchase.
Rigid Stainless Steel Performance
Upgrade your compatible Glock Gen 4 pistol with the NDZ Performance Stainless Steel Guide Rod Assembly. This drop-in recoil system replaces the flexible factory-style guide rod with a rigid stainless steel body designed to support smooth, consistent and dependable operation.
The enlarged guide rod base is shaped similarly to the factory recoil assembly base. This design allows the single-spring assembly to sit in a more parallel position relative to the barrel, supporting proper alignment and reliable cycling.
Unlike a flexible plastic guide rod, the solid stainless steel body removes guide rod flex and supports consistent lockup. Stainless steel construction also provides excellent resistance to rust, corrosion, chipping and cracking.
The included Gen 4 adapter ring installs beneath the retention-end screw. It fills the additional space at the front of the Gen 4 slide and retains the single recoil spring in the proper position.
A removable hex-screw tip allows the recoil spring to be changed when needed. Shooters can select compatible spring weights to better match their firearm configuration and ammunition.
Available spring configurations use premium ISMI recoil springs manufactured from certified aerospace-specification alloys. Depending on the selected option, the spring may be made from chrome silicon or stainless steel.
ISMI springs are heat treated, shot peened and stress relieved after winding to support durability and consistent performance. These recoil springs are used by competitive shooters and law-enforcement professionals worldwide.
Choose the guide rod alone, a guide rod with an individual spring weight or the complete tuner pack containing all available recoil spring weights listed in the variation menu. No permanent firearm modification is required.
The guide rod retention end is available in multiple premium finishes, allowing you to coordinate the assembly with other custom components while maintaining the strength and reliability of a stainless steel guide rod body.
PRODUCT FEATURES
- Designed for Glock G17, G22, G31, G34, G35 and G37 Gen 4 models.
- Solid stainless steel guide rod body.
- Rigid no-flex construction supports smooth and consistent operation.
- Enlarged base positions the single-spring assembly parallel to the barrel.
- Gen 4 adapter ring retains the recoil spring properly.
- Removable hex-screw tip allows recoil spring replacement.
- Available with premium ISMI recoil springs.
- ISMI springs use certified aerospace-specification alloys.
- Springs are heat treated, shot peened and stress relieved.
- Available as guide rod only, with an individual spring or as a tuner pack containing all available spring weights.
- Available in multiple premium end-cap finishes.
- Drop-in replacement requires no permanent modifications.
- Stainless steel construction resists rust and corrosion.
- Will not chip or crack like a plastic guide rod.
- Designed for use with the factory polymer frame.
- Proudly made in the USA.
- Covered by the NDZ Performance lifetime warranty against manufacturing defects.
PRODUCT SPECIFICATIONS Manufacturer NDZ Performance Manufacturer SKU NDZ-GRA-G4-G17-V Product Type Guide Rod Assembly Model Stainless Steel Guide Rod Assembly Material Stainless Steel Available Finishes Silver Polished, Black Nitride, Spectrum PVD, Flat Dark Earth Cerakote, Burnt Bronze Cerakote, Gold PVD, Copper PVD, USMC Red Cerakote, Zombie Green Cerakote, Grey Cerakote and Ridgeway Blue Cerakote For Gun Make Glock Gun Generation Gen 4 Compatible Models G17, G22, G31, G34, G35 and G37 Does Not Fit Gen 1, Gen 2, Gen 3 or Gen 5 Guide Rod Construction Solid, Rigid, No-Flex Tip Type Removable Hex Screw Adapter Ring Gen 4 Adapter Ring Included Spring Brand ISMI, when selected Spring Material Chrome Silicon or Stainless Steel, depending on selected option Spring Weight Varies by selected option Tuner Pack Contents Guide rod assembly plus all available spring weights offered in this listing Available Configurations Guide Rod Only, Guide Rod with Selected Spring or Complete Tuner Pack Installation Drop-In Modification Required No NDZ Custom Kit Yes Warranty Lifetime warranty against manufacturing defects Country of Manufacture United States PACKAGE CONTENTS
Guide Rod Only Option:
- One NDZ Performance stainless steel guide rod assembly with Gen 4 adapter ring in the selected finish.
Guide Rod and Spring Option:
- One NDZ Performance stainless steel guide rod assembly with Gen 4 adapter ring in the selected finish.
- One ISMI recoil spring in the selected weight.
Tuner Pack Option:
- One NDZ Performance stainless steel guide rod assembly with Gen 4 adapter ring in the selected finish.
- All available ISMI recoil spring weights offered in this listing.
Not Included: Firearm, slide, barrel, ammunition, tools or thread-locking compound.
Finish Notice: Finish shades may vary slightly between production batches. Colors may also appear different depending on lighting conditions and individual screen settings. Spring Change and Hex Screw Notice
NDZ Performance recommends applying a small amount of removable blue thread-locking compound to the hex-screw threads after changing recoil springs.
Removable blue thread locker helps hold the screw securely during use while still allowing future removal. Do not use permanent thread-locking compounds. Follow the thread-locking compound manufacturer\'s instructions and avoid over-tightening the retention screw.
Installation Notice
NDZ Performance recommends that all firearm parts be installed and inspected by a qualified and trained gunsmith. Always verify that the firearm is completely unloaded and follow appropriate firearm safety practices before inspection, maintenance or installation.
Important Listing Information
Accessory Only: This listing is for a recoil guide rod assembly and only the spring or springs identified by the selected variation. No firearm, slide, barrel or ammunition is included.
Compatibility: Designed specifically for Glock G17, G22, G31, G34, G35 and G37 Gen 4 models. This assembly does not fit Gen 1-3 or Gen 5 models.
Variation Selection: Package contents, spring weight and guide rod finish vary by selected option. The tuner pack contains all available spring weights offered in the listing.
Domestic Shipping Only: This item is available for shipment within the United States only. Buyer is responsible for confirming that purchase, possession and installation are permitted under applicable federal, state and local laws.
California Compliance: Orders shipping to California are subject to applicable California laws and marketplace restrictions.
Trademark 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.
California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
NDZ PERFORMANCE Precision Parts • American Made • Lifetime Warranty ```
