Jieying JY AWM MSR Spring

Jieying JY MSR/AWM Spring 

Compatible with jieying swift hawk awm; jy MSR and 702 sniper gel ball blaster

Material: metal

Size: 1.2mm * 250mm

1.3mm * 250mm

1.4mm * 250mm

Diameter: 11mm

Package: 1x jieying awm spring

Pls choose the size you want!

Note:  Recommend using 1.2mm spring for the original cylinder piston. For the jy awm metal upgraded bolt set, you could use springs below 1.4mm