NDZ Guide Rod Tuner Pack for Glock Gen 4 20 21 40 41

Designed to fit Glock Gen 4 Models: G20, G21, G40, G41.

Spring Weights Included in Pack: 11 lb., 13 lb., 15 lb., 17 lb., 20 lb., 22 lb., 24 lb.

Tune your Glock Gen 4 pistol for reliable feeding and optimal recoil control with the NDZ Performance Guide Rod Tuner Pack. This kit pairs NDZ’s rigid stainless-steel guide rod (with hex-screw removable tip) with a selection of recoil springs so you can match spring tension to your ammunition and shooting style; reducing malfunctions and improving follow-up shots. Upgrade your Glock with high-quality components from NDZ Performance.

Features:

• Eliminates guide-rod flex: stainless construction tightens lockup and improves consistency.
• Tunable system: swap springs quickly via the hex tip to calibrate to different loads.
• Durable & frame-safe: won’t chip or crack like OEM polymer rods; safe on Glock polymer frames.
• Pro-proven: trusted by law enforcement and competitive shooters for repeatable performance.
• Made in the USA by NDZ Performance. Precision machined to exact tolerances and backed by a Lifetime Warranty against manufacturing defects.

See our complete line of Glock Gen 1-4 Products here

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

Important: We recommend the use of Blue Loctite on the hex screw threads when switching out springs. This will provide a firm hold and still allow easy removal when necessary.

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.