KJ M4 Complete Hop Base and Hop Dial Assembly

KJ M4 Part # 5 ,6 ,16 ,31 ,85 ,85A, 94

#5: Hop Base

#6: Hop Plate

#16: Hop Dial

#31: Hop Plate Spring

#85: Hop Dial Screw

#85A: Hop Dial Screw o-ring

#94: Hop Dial Spacer

Fits all versions of KJ M4 GBBR