
Tru-Hop Concave Spacer
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, the hop-up effect of the Tru-HopTM bucking will be maximized with full area contact. Like the bucking itself, this spacer was designed in-house and fine tuned through experimentation. The end result is a product that stands out as an individual contributor to performance.
Compatibility (Gen3 & Gen2)
Some inner 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, although we’ve had success with some rounded corner barrels.

Tru-HopTM is compatible with Automatic Electric Gun (AEG), High Pressure Air (HPA), and Gas Blow Back (GBB) airsoft replicas using AEG inner barrels. We recommend coating the portion of your your barrel shown above, and the exterior of your Tru-Hop bucking, with a thin film of silicone oil to aid in installation. Tru-HopTM buckings have a 500 – 1000 round break-in period before maximum performance is achieved.
Pairs well with
In stock! Ships within 1-2 business days.
Complimentary shipping & returns

Tru-Hop Concave Spacer
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Do I need an account to order?
No, but an account lets you save addresses, review orders, download invoices and manage wish‑lists.
When will my order ship?
Orders placed before 15:00 CET on business days ship the same day if the
items are in stock. A tracking e-mail follows automatically.
Can I change or cancel my order?
Yes, e-mail orders@skirmshop.nl or use the contact form before 15:00 CET on the shipping day
with your order number. After dispatch, changes aren’t possible.
Do you ship outside the EU?
Yes, the shipping rates and import taxes will be calculated at checkout.
What is the minimum age to buy an airsoft replica?
Please check your own governments regulations for the minimum required age.
Don't forget to send your ID.