Zaffiri Precision
Zaffiri Precision builds CNC-machined aftermarket slides and match-grade barrels for Glock and Sig Sauer pistols, made in the USA from 17-4 stainless steel slides and 416R stainless barrels. The ZPS slide line trims reciprocating mass, adds aggressive front and rear serrations, and comes cut for red dot optics standard. Complete slide packages ship with an upper parts kit and co-witness sights installed, so a Glock upgrade is closer to a swap than a full build.
Read our full Zaffiri Precision Buying Guide ↓
What Makes Zaffiri Precision Slides Different
Zaffiri Precision machines its slides from 17-4 stainless steel rather than the standard carbon steel most factory and aftermarket slides use, giving better corrosion resistance and a harder finish. The ZPS line is cut for reduced reciprocating mass and features deep, aggressive front and rear serrations for a faster, more positive grip during manipulation. Slides are made in the USA and RMR-cut for optics as standard, not an upcharge option.
Zaffiri Precision Complete Slides: ZPS.2, ZPS.3 and ZPS.P
The ZPS.2 is Zaffiri's standard complete slide, with multiple top and side cuts and blacked-out co-witness sights. The ZPS.3 adds a more aggressive window-cut top profile for extra weight reduction, and the ZPS.P is a ported variant that vents gas through the top of the slide to reduce muzzle flip — a common option for competition and fast follow-up shots. All three ship complete with an upper parts kit, so installation is a drop-on swap onto a compatible frame.
Zaffiri Precision Match-Grade Barrels
Zaffiri's drop-in barrels are machined from 416R stainless steel for match-grade accuracy, available threaded or non-threaded in Nitride Black or Titanium Nitride Gold finishes. The gold TiN finish is a popular way to visually match a two-tone slide build, while the black nitride option keeps a more traditional look. Threaded barrels accept a suppressor or compensator without swapping again later.
Which Glock (or Sig) Fits Your Zaffiri Upgrade
Zaffiri Precision currently covers Glock 17 Gen 3 and Gen 5, Glock 19 Gen 3, and Glock 43, along with Sig Sauer P365 and P365XL barrels. Slides and barrels are frame- and generation-specific, so confirm your exact Glock generation or Sig model before ordering — a Gen 3 slide will not fit a Gen 5 frame without the correct rear rail cut.
Installing a Zaffiri Slide: What to Know Before You Buy
A complete Zaffiri slide (with barrel, sights, and upper parts kit included) is a direct swap for most builders — no gunsmithing required beyond standard field-stripping. A barrel-only purchase still requires a compatible slide with the correct barrel hood dimensions. Buyers running a red dot should confirm their optic's footprint matches the slide's factory cut before ordering, since not every optic uses the same mounting pattern.
Frequently Asked Questions
What material are Zaffiri Precision slides made from?
17-4 stainless steel, CNC-machined in the USA, with 416R stainless steel match-grade barrels.
Do Zaffiri slides come cut for red dot optics?
Yes — RMR-pattern optic cuts are standard on Zaffiri's complete slide packages, along with co-witness height iron sights.
What's the difference between the ZPS.2 and ZPS.3?
The ZPS.3 has a more aggressive window-cut top profile for additional weight reduction over the standard ZPS.2 cuts.
Will a Zaffiri Glock 19 slide fit my Gen 5 frame?
Only if it's specifically machined for Gen 5 — Gen 3 and Gen 5 Glock frames use different rear rail cuts, so slide and frame generation must match.
Browse our full Glock Parts & Accessories selection for more upgrades and OEM replacement parts.
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