The SHS Side-Wheel M4 Hop Up Unit is a one-piece hop up designed for M16 AEGs. The side wheel adjustment is similar to the MadBull Ultimate hop-up design. The SHS one piece hopup unit includes a spare AEG bucking.
SHS M4 Side Wheel Hop Up Unit Features:
-One Piece Design fits most M4/M16 AEGs
-Hop Up Bucking Included
-Wide Adjustment Range
SHS Parts are affordable, quality airsoft repair and upgrade parts. These universal upgrade parts fit most airsoft guns and are ideal for use in repairing any brand AEG or for upgrading entry-level replicas. All SHS Airsoft Parts are made in Hong Kong.