About Tru-Hop

Tru-Hop High Performance Bucking (Gen2)

The Tru-HopTM is a high quality, high performance, all weather hop-up bucking designed to significantly boost range and accuracy. This hop-up bucking is easily installed and requires zero† modification. Additionally, this bucking will give consistent high performance results in a wide temperature range (-50°C to 230°C/ -58°F to 446°F). This means that you can expect the same range and accuracy regardless of playing in cold snow or in a hot desert. Lastly, the material used in this hop-up bucking has high durability and allows the Tru-HopTM to withstand hundreds of thousands of rounds.

Most barrel brands are completely compatible. Please refer to the “Compatibility” section below to check if your barrel is compatible.

*For detailed instructions on the Tru-HopTM installation click here.

The Science Behind Tru-Hop

The secret to the performance boost lies with the concave contact patch inside of the Tru-HopTM bucking. This contact patch was designed from scratch and then tuned through numerous redesigns and experiments. The end result is a shape that maximizes performance and is backed by hours of testing, logging, and re-testing.

One of the design goals of the internal contact patch was to maximize the amount of surface area that contacts the BB. This design has two main advantages:

  • Increased friction over the top of the BB, and
  • Muzzle energy retention

The above translates to being able to over-hop virtually any weight BB without experiencing signification energy loss. The Tru-HopTM bucking does this by allowing the BB to pass more freely during firing since little hop-up pressure is required. The air losses at the nozzle-bucking interface are therefore reduced and thus more energy is retained during firing. This translates to farther range at your optimal flight path.

The second major design goal of the concave contact patch was to boost the accuracy of your airsoft gun. Hours of trial-and-error testing was put into tuning this feature alone ensuring compatibility of the bucking across numerous BB brands. Other features of the bucking were thoroughly studied as well.

Simply put, every aspect of this bucking was designed and tested to yield the maximum performance from your airsoft gun.


TruSight Airsoft has also designed a companion hop-up spacer that replaces the stock rubber cylinder in a typical hop-up unit. Although this spacer is not required, we found that additional precision is gained when used with the Tru-HopTM bucking. Like the bucking itself, this spacer was designed in-house and fine tuned for performance through experimentation and multiple redesigns. The end result is a product that stands out as an individual contributor to performance.


Some barrel requirements must be met due to the shape of the internal contact patch of the Tru-HopTM bucking. We designed the bucking with broad compatibility in mind. However not all barrels will be compatible. Please ensure that your barrel window meets the minimum dimensions shown below. Ideally the corners of the barrel window should be squared, however we’ve had success with some rounded corner barrels.

Window of Barrel

Installation Instructions

For full detailed instructions (pictures included) on how  to install the Gen2 Tru-HopTM bucking and the former Tru-HopTM concave spacer, click here.