KCI USA lower parts kit for Glock 17 Gen 3 frames - every internal needed to rebuild or assemble a stripped Glock 17 lower. Drop-in OEM-spec components, ships in one kit. What's included Trigger Trigger housing with ejector Trigger spring Connector (5.5 lb) Trigger pin Trigger housing pin Locking block pin Slide lock + slide lock spring (fits G17 / G19 - G26 spring not included) Slide stop Magazine catch + magazine catch spring Fitment Glock 17 Gen 3 frames Does not fit Gen 4 or Gen 5 frames Does not include frame, locking block, or magazine Dry-fire test the assembled frame to verify trigger reset and slide-stop engagement before live fire. 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.