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Tru-Hop AEG Bucking with Spacer by TruSight Airsoft - Blue

ID: 65565 (HU-Truhop-BL)
4.3 stars, based on 11 reviews
Tru-Hop AEG Bucking with Spacer by TruSight Airsoft - Blue
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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 installed like any other hop-up bucking on the market and requires zero modification for its use. Additionally, this bucking will give consistent high performance results in a very wide temperature range (-50C to 230C/ -58F to 446F). This means that you can expect the same range and accuracy regardless if you are playing in cold snow or out in a hot desert environment. Lastly, the material used in this hop-up bucking was chosen from an extensive list of options and was identified as the best choice due to multiple physical properties; one of which is the very high durability that allows the Tru-HopTM to withstand hundreds of thousands of rounds.

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 actually 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. The first advantage comes from the increased amount of friction over the top of the BB due to a larger amount of material making contact with the surface. This friction allows the user to over-hop virtually any weight BB with minimal pressure from the hop-up arm. The second advantage is related to the first and will be more pronounced in a typical AEG (automatic electric gun). What happens here is that there is very little loss in muzzle FPS from increasing the hop-up. In other words, you can set your hop-up to the optimum setting for your desired flight path and still retain the full muzzle energy you get at zero hop-up. The loss in FPS an average AEG typically experiences with increasing hop-up pressure comes from the stock bucking nub temporarily retaining the BB while air pressure is built up during firing. During this time, some air is leaked at the bucking-nozzle interface which leads to less kinetic energy at ideal hop-up. In contrast, the Tru-HopTM bucking allows 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 all translates to farther range at your optimal flight path.


  • Designed to improve accuracy and range with drop in simplicity
  • Concave contact patch is the secret behind the TruHops improved performance
  • Proprietary material is designed to withstand hundreds of thousands of rounds
  • The TruHop includes a concave spacer designed to complement the performance of the bucking
  • Compatible with most popular inner barrels
  • Works with most common weight of BBs
  • Effective in a wide range of temperatures
Compatibility: Most Airsoft AEGs and AEG inner barrels
Material: Polymer rubber

Manufacturer: Trusight Airsoft

11 Customer Reviews

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by Patrick B. on 09/11/2017
"This bucking and spacer combo worked wonders for my groupings. You MUST use the two together, otherwise it will not work as well. I though using a Maple Leaf spacer would work because of the concave nature of the contact point, but it didn't work as well. It is indeed a very soft bucking and you should proceed with caution when installing.

That being said, I installed this in a test rifle to see how it performed. The gun was shooting 380fps with .2s, had a 285mm 6.02 ZCI tightbore, and a Lonex Hop-Up unit. I was getting 6-10 inch groupings at 250 feet with G&G .28s. BBs started to drop a little after that. Keep in mind this was a crude and quick install to test it and I wasn't very careful on making sure the spacer was centered on my hop-up arm.

I just installed it on my Prometheus tightbore and it the patch fit perfectly in the hop-up window of the barrel. The groupings should be better with this setup but I have yet to test it.
by Michael F. on 08/16/2017
"Excellent bucking! This bucking gets as much or more range as a flat hop with much less work. I was never able to successfully install an r hop so I can't really compare, but I would assume that it would be almost as good as an r hop. I have not used the included spacer because it doesn't work properly in m4 chambers because the hop up arm does not put even pressure on the whole nub. Instead I have used an H spacer but a normal nub would probably work as well. The spacer included would work well in a g36 style hop up because it is pressing straight down onto the bucking.

My only complaints:
The bucking is a little bit thin (but still sturdy) so you will probably have to use teflon tape to make sure it is a tight fit in your hop up. (Especially if you are using a prowin or some variant of it)
You must be very careful when installing and taking off the bucking as to not rip it.

This bucking worked so well, I decided to order 4 more. It is like r hopping your gun with very little effort.
by Roy D. on 07/18/2017
"I cant say this is a bad unit because the issues Ive had may have been my own fault, but the best piece of advice i can give in regards to a tru-hop is to be EXTREMELY careful when installing, because its a gummy silicone sort of texture, almost like a rubber fishing worm, or silicone RTV, rather than the rough rubber/silicone thats used in normal buckings. You will also have to modify your hop arm to use this with a stock hop up. Simple mod, just have to sand the bumps off the arm that hold the spacer in place. Ive also heard this works just fine with a normal spacer too though.

This does NOT come with any sort of instructions, so be sure to sand sharp edges off the hop window if youre running an aftermarket barrel like myself. Cant speak with how well it works for now, because the prowin hop up i bought didnt work, and the tru hop ripped when i tried to install it back into the stock chamber.

SO if you buy this, use plenty of saliva or soap to slide the bucking onto your barrel, and smooth out the sharp edges, and it should be a good time.

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