Vector Optics
Multi-tier riflescopes, red dots, and rangefinders (Continental, Tauron, Paragon, Veyron lines) with VictOptics as a dedicated lower-cost airgun and airsoft sub-line.
Vector Optics set out in 2007 to prove Chinese-made scopes could compete on quality, and has since built a US branch in Utah alongside its Shanghai headquarters and factory. Its VictOptics sub-brand is the one to look at for airgun-specific gear, offering scopes rated to 750 Gs of shock for spring and gas piston rifles specifically, separate from Vector's mainstream hunting and tactical lines.
Warranty: Tiered by product line: a standard 5-year limited warranty requiring registration, and a T-VIP lifetime warranty (fully transferable, no receipt required) on the Continental, Tauron, Scrapper, Paragon, and Frenzy lines specifically.