Adjustable 3D Print Hop Up for JM Gen13 SJ M4 MK18

This adjustable 3D print Hop Up is compatible with the SJ M4 MK18 and JM Gen13 gel blasters. Improve your accuracy and precision with this professional-grade upgrade. Easy to install and use, perfect for gel blaster enthusiasts and experts. Don't settle for less, upgrade your blaster with this hop up today.

Good for jm gen13, sijun sj m4 and sj mk18 gel ball blasters.

Specifications:

Brand: DK

Material: 3d print

Length: 50mm

Outer dia: 13mm

Inner dia: 9.5mm

Package includes: 1x sj m4 cqb hop up