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NDZ Guide Rod Tuner Pack for Glock Gen 1-3 20 20SF 21 21SF

Product Code: NDZ-G3-G20-TP
Read (4 reviews) Write a Review

Manufacturer: NDZ Performance

Quantity in Stock Quantity in Stock: 50

About this product+

NDZ Tuner Packs for Glock Gen 1-3 20, 20SF, 21, 21SF

The NDZ Performance Stainless Steel Guide Rods provide a decisive advantage for all Glock owners. Special features include a rigid stainless steel body that improves lock up by completely removing "guide rod flex". The hex screw removable tip allows the user to choose various spring weights that will calibrate the ammunition to his gun. Used by Law Enforcement as well as competitive shooters worldwide these guide rods will not chip or crack like the factory plastic guide rods are prone to do. Will not damage or wear the polymer Glock frame and is guaranteed to provide a lifetime of reliable service. 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.

A spring too light could cause feeding failures and damage your firearm, and a spring too heavy can cause your muzzle to nose-dive and possibly cause difficulty reacquiring your target in a timely manner. This tuner pack is designed for you to find the best guide rod spring to match the pressure of your load, to avoid jams and misfeeds.

Please use the proper tools like a vice and This NDZ Performance Guide Rod Spring Removal Tool here when switching out your springs.


  • 11LB
  • 13LB
  • 15LB
  • 17LB
  • 20LB
  • 22LB
  • 24LB


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.

Product Features+

Manufacturer: NDZ Performance
Manufacturer Sku: NDZ-G3-G20-TP
Brand: NDZ Performance
Type: Guide Rod
For Model: Tuner Pack
Country/Region Of Manufacture: Made In the USA
Upc: Does Not Apply
NDZ Custom Kit: Yes
SKU's in Kit: ISMI-RS-11, ISMI-RS-13, ISMI-RS-15, ISMI-RS-17, ISMI-RS-20, ISMI-RS-22, ISMI-RS-24, NDZ-GLK-GRO-G20
Material: Stainless Steel, Chrome Silicon
Color: Stainless Steel, Black
For Gun Make: Glock
For Gun Generation: Gen 1-3
For Gun Model: 20 20SF 21 21SF
4 Reviews
  • Rick Eckhardt

    Nov 6th 2021
    5 Nov 6th 2021
    Guide rod tuner pack

    Had what was needed for a custom build to function

  • Anthony Landry

    Oct 9th 2021
    5 Oct 9th 2021
    Love the service! Love the product!

  • Dennis

    Jun 29th 2021
    5 Jun 29th 2021
    Tuner pac

    This kit is perfect to dial in your glock

  • john quinn

    May 29th 2021
    5 May 29th 2021
    customer service

    great company, will continue to do business with them

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