Madbull Shark Hop-Up Set - Rubber & Silicone
- This set includes a regular Shark hop-up rubber for normal temperatures and a silicone bucking for use in colder temperatures.
- They are colour coded for easy identification, the clear one being silicone and the black one being the regular rubber bucking.
- These rubbers also create a tight seal between the barrel and the hop-up unit to prevent air loss.
- They're also specially designed to prevent double feeding with the addition of three fins at the entry point of the rubber.
- Kit also includes two replacement plastic fishbone hop-up nubs.
- Installation requires that a small bit of silicon oil is applied to the inside of the rubber before use.