Airgun rifles are of two types – PCP and spring-powered. The user can mount pretty much every riflescope on a PCP airgun rifle because its recoil is negligible. The situation is different when it comes to a spring-powered airgun rifle. The reverse recoil produced by a spring is harsh and goes forward and backward – not all riflescopes are designed to withstand such force. Even if the riflescope is rated for a .308 Win, the recoil of a spring-powered airgun can cause irreparable damage to it.
The riflescopes in this category are designed to withstand the reverse recoil of a spring-powered airgun rifle.
Recoil resistance is especially important when looking for a riflescope in the entry price class since the more expensive ones are often high recoil rated. One of the cheapest riflescopes available, designed especially for airgun rifles, is Hawke Airmax (even the least expensive in this category withstand reverse recoil).
There are all sorts of airgun riflescopes on the market: cheap, expensive, with different magnifications, etc.
Hawke Airmax 30 SF Compact 3-12x40