Performance parts
hop-up nub/ hop up Tensioner
The hop-up nub designed for AEG 60/70/80 degree hop-up chamber bucking rubber, such as the Hop Up Nub, boasts a slight external concave profile. This particular design feature serves a crucial purpose by enhancing the contact between the nub and the BB (ball bullet). The concave surface of the nub enables it to conform more closely to the shape of the BB, which ultimately leads to improved accuracy and consistency in shooting performance.
This compatibility extends to most AEG hop units, ensuring ease of installation without the need for extensive modifications. In essence, this specialized hop-up nub optimizes the interaction between the bucking rubber and the BB, thereby maximizing the effectiveness of the hop-up system in maintaining trajectory control and enhancing overall shooting precision.
hop-up nub/ hop up Tensioner products
Shape and fit guide
Hop-up nub fit and selection
Select a nub that matches your hop-up arm and bucking. Compare its shape and dimensions, then check that the arm can move through its adjustment range without binding.
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products in this collection
Compare shape and dimensions
Compare the nub’s width, height and contact shape with the part it replaces. Use the selected product’s dimensions rather than judging by its name or photo alone.
Check the hop-up arm space
The nub needs to sit correctly under the arm. Check the available space and make sure the arm can move through its adjustment range without binding.
Match the bucking
Check the nub and bucking pairing in the product specifications, including the shape of the contact area. A hardness label alone does not establish fit.
Frequently Asked Questions
View Hop-up NubsHow can I check whether a nub fits my hop-up arm?
Compare the nub’s dimensions and shape with the space under your arm and the original nub. Check the specified bucking pairing, then confirm that the nub stays seated and the arm adjusts freely. If dimensions are missing, ask us to confirm them before ordering.