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I have seen 2 different Butler Creek objective sizes on your sight the Diamondback 4-12 x 40. MPN: 30290 and
MPN : 30280. Which one is the right one? — 1 Answer
by
Andrew Freemsn,
from AL, United States Asked on November 4, 2020
Vortex Diamondback 4-12x40mm Rifle Scope, 1in Tube, Second Focal Plane(4.4)
Answered by
Ethan C.,
Gear Expert,
from IL, United States,
on December 18, 2020
Neither are correct, the 30270 cap should be the ideal one. This scope has a 1.89" outer diameter on the objective end. Those scope caps stretch a bit, so you don't want one the same size (30280), let alone bigger (30290). Since the 30270 cap is the next size down from the scope's diameter, that is the ideal option.
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