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Madbull Upgrade Shark Soft Hopup Bucking ( Red ) w/ Fishbone Spacers for Metal Gearbox Airsoft AEG Gun
Madbull Upgrade Shark Soft Hopup Bucking ( Red ) w/ Fishbone Spacers for Metal Gearbox Airsoft AEG Gun

Price: $13.95

Availability:: Out of Stock
Product Code: SAH60
Out of Stock




  • 2x Madbull Shark Red Soft Hopup Buckings
  • 2x Madbull Fishbone Hopup Spacers


The Madbull Shark hopup bucking is made from soft 60 degree rubber which allow them to be installed more easily and more easy to adjust properly. The softer material provides a better grip and will cause less FPS drop than traditional harder hopup buckings. The Shark bucking was specifically designed to prevent double feeding in the 470 CO2 Gearbox conversion but works well with any gearbox. The bucking features 3 internal fins which reduce double feeding and in some cases improve air seal depending on your setup. The Fishbone spacer provides better and more even contact with the BB and improves hopup performance. The bucking is the part that contacts the BB as it passes through the hopup chamber and produces friction on the top of the BB which causes backspin which allows the BB to be more stable in flight and increase the range by producing lift. Hopup buckings are a wear and tear part and should be replaced as often as possible and every time you replace your inner barrel. Installed a used bucking and result in small tears which will eventually lead to other issues. Properly maintaining and replacing worn parts will keep your AEG operational for a very long time.

Warning: We at AirRattle.com recommend all upgrade / repair parts are installed by a professional as additional upgrades and/or custom fitting may be required. It is the responsibility of the customer to ensure the part is compatible with their gun prior to purchase. We are not responsible for any damage caused during or after installation and are installed at customer�s discretion.
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Average Customer Review: Average Customer Review: 4 of 5 4 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
4 of 5 Red w/xnub April 19, 2014
Reviewer: Jason D from Douglas, GA United States  
Gets a decent airseal, fit ICS Barrett fine, it was a little snug going in another version M4, but no where near impossible. OH and I did have to trim 1/8 inch off of one. Nub variation, hmm not impressive but effective. Once again AirRattle service was awesome, had one item on backorder and Aaron contacted me promptly and got the rest of my order out asap.

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