DK Adjustable Hop Up for JM M4A1 J9

Description

DK Adjustable Hop Up for JM M4A1 J9

Features:

• Hop Ups Increase Firing Distance and Improve Accuracy by Applying Back Spin on the Gel Balls as They Leave the Barrel.
• High quality DK Hop Up
• Fully Adjustable
• Perfect fit for M4A1 J9

Instructions:

• Fit to end of barrel with flap on top
• Tighten grub screws
• To increase lift, simply adjust by turning grub screw clockwise to increase angle of the flap.

Package Includes:

• 1 x Hop up