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View larger RetroArms Hop-Up Nub Set Type B contains two CNC nubs for standard hop-up chambers. Both nubs are made of durable POM using precision CNC turning. Thanks to their different convex and concave shapes, they allow you to try different hop-up pressure settings. The nubs have the same width as the hop-up pressure arms, preventing deformation.

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The set contains two POM hop-up nubs designed for standard hop-up chambers. One nub has a convex shape and the other a concave shape, allowing you to experiment with different hop-up pressure settings. Thanks to their matching width with the pressure arms of hop-up chambers, the nubs are properly supported during use and do not deform. Both nubs are resistant to oils and greases.
Both nubs are made of POM using precision CNC turning for accurate dimensions.
The set contains two nubs with different shapes, allowing you to try different hop-up pressure settings.
The nubs are designed for standard hop-up chambers from various manufacturers.
The nubs have the same width as the pressure arms of hop-up chambers, preventing deformation during adjustment.
Both nubs are resistant to oils and greases. During installation, a small amount of grease can be used to hold the nub in place.
| Variants | Type B |
| Color | White |