DK

The most well known hop-up brand is back with a new generation of Hop-up.This Hop-up can be used with JM Gen 11 AK Gel blaster model..

Adjustable hop up in compensator design for M90 Two..

Sleek and low profile hop-up by DK. Fits inside most of the muzzle.The hop-up is adjustable to make your gel ball pellets fly straighter and further...

11mm fixed hop-up that goes inside your stock muzzle.*This hop up is not adjustable*..

ABS plastic molded handguard for JM Gen.8 M4A1 stock shell.Comes in Black, Sand(Tan) and Transparent color...

The legendary hop up maker DK has released a brand new hop up specifically for the WELL M4's proprietary outer barrel. Increase your blaster's performance and accuracy with this adjustable hop up. Glow in the dark edition...

There are 2 most prominent concept in WBB hopup. The first one is the older and more well known concept of rotating the gel by creating a different air pressure which is what ATK hopup are made off. They usually came with a small hole which displace the air as the gel passes through, creating the ma..