Zaffiri Precision 17.5.UPK Upper Parts Kit for Glock 17/34 Gen 5

PARTS INCLUDED: FIRING PIN SPRING, FIRING PIN SPACER SLEEVE, SPRING CUPS (2-PACK), FIRING PIN SAFETY NITRIDE, FIRING PIN SAFETY SPRING, EXTRACTOR DEPRESSOR PLUNGER NITRIDE, EXTRACTOR DEPRESSOR PLUNGER SPRING, SPRING LOADED BEARING, FIRING PIN CHANNEL LINER, EXTRACTOR, SLIDE COVER PLATE, UPGRADED ZP STAINLESS STEEL RECOIL SPRING ASSEMBLY (GUIDE ROD) OEM SPRING WEIGHT