A direct replacement slider for your M4 AEG hop-up unit. Machined to PolarStar's standard, this 3x3.5 slider keeps your hop-up dialed in and your shots consistent — no slop, no surprises.
A direct replacement slider for your M4 AEG hop-up unit. Machined to PolarStar's standard, this 3x3.5 slider keeps your hop-up dialed in and your shots consistent — no slop, no surprises.