Author: NDZ Performance

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NDZ Performance

NDZ Performance

NDZ Performance is a U.S.-based manufacturer of aftermarket firearm accessories and parts, founded by David Dziob and Antonin Blazek in 2004 and headquartered in Wallingford, Connecticut. Operating a fully equipped in-house CNC shop with 3D printing, CNC milling, lathes, and laser engraving, NDZ produces custom and performance upgrade parts for Glock, Sig Sauer, Smith & Wesson, Springfield Armory, Ruger, CZ, Beretta, Mossberg, Remington, AR-15, AK-47, and more — including guide rods, custom slides, slide cover plates, and magazine base plates. Articles on this blog share product insights, installation guides, and real-world testing to help shooters make informed upgrade decisions.
NDZ heavyweight stainless steel guide rod Glock 43X, 48, and 43 assembly with ISMI spring

A straight answer on whether a steel or heavyweight guide rod makes sense for a Glock 43X, 48, or 43, why the

NDZ stainless steel SD9 VE guide rod assembly for Smith & Wesson SD9 VE and SD40 VE

A straight answer on whether a steel guide rod is worth it for the Smith & Wesson SD9 VE and SD40 VE,

NDZ stainless steel Walther PDP guide rod assembly with ISMI recoil spring

An honest look at whether a steel guide rod does anything real on a Walther PDP, written by the people who machine

NDZ solid stainless steel guide rod Glock 17 Gen 5 heavyweight assembly with ISMI recoil spring

Your friend told you to get a "solid metal" guide rod for your Glock 17 Gen 5. Here is the honest breakdown

NDZ stainless steel Springfield Echelon guide rod full-size captured assembly machined in Cheshire CT

A straight answer on whether a steel Springfield Echelon guide rod is worth it, which NDZ part fits the Compact versus the

NDZ Performance stainless steel Sig P365 guide rod assembly with ISMI recoil spring

An honest look at whether a steel guide rod does anything real on a Sig P365, written by the people who machine

NDZ stainless steel guide rod for Glock 19 Gen 5

The honest, manufacturer-written guide to pistol guide rod upgrades: what they really do, when steel is worth it, and the right answer

NDZ steel guide rod Glock Gen 3 assembly with ISMI recoil spring for G19, G23, G32, G38

A straight answer on steel guide rods for older Glocks (Gen 1 through Gen 4): where a steel rod actually helps, why

NDZ stainless steel Glock 19 Gen 6 guide rod assembly with ISMI recoil spring

A new Gen 6 owner asks whether a "solid metal" guide rod is the right call. Here is the straight answer for

Remington 870 shotgun trigger plate assembly and receiver pins arranged for installation

Learn how to upgrade your Remington 870 with custom receiver and trigger pins in this step-by-step guide. Discover the benefits of using stainless