The Zaffiri Precision ZPS.2 is a complete assembled slide for the Glock 17 Gen 3 frame, cut for an RMR-footprint red-dot optic and machined from a single billet of 17-4 stainless steel at Zaffiri's facility in Largo, Florida. Tight-tolerance geometry holds the barrel, extractor, and firing-pin channel in true alignment for consistent lockup and repeatable accuracy. The Black/Black configuration pairs a black-nitride slide finish with a matching black match-grade barrel - a stealth build that reads clean and suppresses reflection under range lights. Specs & features: ZPS.2 slide - single-billet 17-4 stainless steel RMR-footprint optic cut for direct red-dot mounting Black/Black finish - nitride slide with matching barrel Fits Glock 17 Gen 3 frames 100% American made - Largo, FL Verify frame generation before install; this slide is cut for Gen 3 rails and will not drop onto Gen 4 or Gen 5 frames without matching internals. Run the recoil spring appropriate to your build; tighter Zaffiri tolerances often benefit from a slightly heavier spring during the first 100-200 round break-in. Optic & cover-plate hardware: RMR footprint. Screw specs for reference: cover plate 6-32 x 1/3, optic 6-32 x 7/16. DISCLAIMER: "GLOCK" is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.