Nikko Stirling
Value to mid-tier riflescopes since 1956, including the Airking series built specifically for high-power air rifle recoil and the Mountmaster line sized for .22LR and air rifles with 11mm rail mounts.
Nikko Stirling has built value-tier optics since 1956 and, notably among crossover brands, publishes an Airking line built specifically to withstand high-power air rifle recoil rather than treating airguns as an afterthought. Its lifetime warranty is real but restricted to the original owner with proof of purchase, unlike the no-questions policies UTG or Athlon offer.
Warranty: Lifetime warranty on riflescopes and binoculars to the original owner only, proof of purchase may be required, product registration required; electronic parts carry a 5-year warranty.