Butler CreekMultiflex

Good fit and works well

This works well, fits well. However the flex objective side with no yellow button will never stay closed. Just know not to buy the flex version of the objective side, no latch, no lip, there is nothing to hold it closed and it pops open all the time. I returned it and bought a Vortex one, I did keep this eyepiece side though it is nice.

New scope different diameter, same reliable flip up installed.

Maybe I had a rare positive experience but, honestly all of my Butler Creek caps have fit perfectly. Granted, I do measure the scope personally before I order. Have purchased four caps now, both the standards for a prism optic and these multiflex for an old BSA Radiant scope that came with a bolt action I bought and that I could not find any information about. Both pairs of Butler Creeks have fit flawlessly, no falling off or caps staying open. Everything works as advertised with my units. Very nice.

Does its job very well. I just wish that there was a way to figure out like on a chart for each specific scope which size to get. I had to waste a couple of hours trying to figure it out. You can download and print out the sizing diagrams but that still takes time and estimation and uncertainty if you did it right. I've bought wrong ones before for my other scope and had to order again the right one and sell the wrong one - way too much trouble!Whoever are selling these, please compile a chart for the most common scopes and build from there. It'll save buyers a lot of time and guesswork. I'll start. I bought size 19-20 for the Eyepiece of my Nikon P-223 4-12 X 40MM Scope - BDC600

This is an honest review of this item, which I purchased full price on Amazon.com:I was looking for an affordable and quick opening replacement cover for my hunting rifle. I have always heard that the Butler Creek covers are the only way to go, now I'm a believer!I will never again settle for the covers that come with some optics, they are obviously worthless. These covers seem to be built well and open EXTREMELY quick! They wont keep the water out but they will keep your glass from getting scratched up!Make sure you get the right size, its extremely important! If any issues come up with mine over the hunting season and in the future I will update this review.If you want the best optic cover in the biz...buy Butler Creek!

Works as advertised. Seems durable. Nice solution for my need. I like the functionality. They are far less expensive than many products that do the same thing, or less. I would purchase again.

This will fit the ocular lens on the EFR scopes. I say "scope" because there has been a change somewhere along the line. One has metal turret covers and the other plastic. The ocular on the plastic capped scope is slightly smaller in dia. than the other one. It still fits fine - an goes on easier. The optics and clicks are identical on these scopes. I have three right now.Butler Creek 21920 Multiflex Flip-Open Scope Cover Eyepiece, 19-20Use this for the objective lens: #30 1.960"

I’ve used them for years and the newer flex covers offer a greater range of fit. Great product with super fast shipping.

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I ordered these for 1 different scopes that I own. They fit and work well which will make the 2022 season more enjoyable.The cost of them, as it turns out, was quite high. They were available in a local store for under $15 each, not the $25 I paid through Amazon.

The quality and price are hard to beat. Ensure that you measure the OD of the objective lens very carefully before selecting the specific model. Use a micrometer if you have one.

The scope caps are great, getting sizing right can be trick . Have had to return some caps that didn't fit right contrary to sizing charts and measurements.