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- Shop and workshop in Aulum, Denmark
About 4UAD Hop-Up Bucking, AEG
The 4UAD Hop-Up Bucking for AEGs (4UANTUM Friction Pro) is a high-performance hop-up bucking for most electric airsoft guns. It has a traditional single-point design with a special contour on the contact surface that gives enough friction to lift heavy BBs up to 0.48 g.
The bucking is orange and 25 mm long and fits standard AEG hop-up units and inner barrels. The aim is a flat, consistent and accurate trajectory, where the BB spins around a centred axis on every shot.
More backspin for heavy BBs
A good hop-up bucking is one of the cheapest and most effective upgrades for an AEG.
- Lifts up to 0.48 g: The contour on the contact surface gives enough friction to lift heavy BBs, which fly more stably in wind.
- Single-point design: The traditional design with a small contact patch gives a precise pressure point and consistent backspin.
- Centred spin: The bucking is designed to give the BB a centred axis of rotation, so shots do not curve off to the side.
- Fits standard AEGs: For most AEG platforms with a standard hop-up unit and inner barrel.
- 25 mm, orange: Standard AEG length – the orange colour makes it easy to tell apart from other buckings.
Maintenance and safety
Fitting requires knowledge of the gun's internals – if in doubt, have a workshop do it. Always check the gun's velocity after an upgrade so it stays within site limits, and make sure the gun is unloaded and without gas/battery while you work on it.
Delivery and returns
Shipping options and prices for your country are shown at checkout.
Full 14-day right of return with a money-back guarantee. Unused items in unopened packaging can be returned for up to 365 days in exchange for a gift card. Easy returns via our returns portal. Read more in our terms and conditions.
