Flip up covers for Hawke Sidewinder 4-16x50?

Very good question, My local gun store carrys a lot of Butler Creek caps but non to fit my Hawkie 4x16-50?
Mike

I have a Hawke Sidewinder 6-24x56 and the Butler Creek cap is size 19. I'm not sure what size the package says, the 19 is on the inside ring of the flip up cap. You have to take it out of the package to see it. Hope this helps. The cap is for the objective end

Did you ever find out which ones fit? Or anybody else know

Why not just order the real deal from Hawke .

https://us.hawkeoptics.com/flip-up-scope-covers.html 

If you decide to go with the tight fitting vortex defender style covers, get the ones from Monstrum instead. It’s the same exact cover, except Monstrum ones are $10 a piece while Vortex ones are $20 a piece.

Measure your outside diameter of both ends of your scope with calipers. Butler creek, vortex, Monstrum, they all have charts that show inside dimensions for their scope covers.