that sounds like a deal thanksI posted this about a year ago in response to a similar post, might consider this option.
My eyesight was never ideal for shooting so about 40 years ago after trying several commercial eyesight shooting aids I found this eyesight rig worked the best & allowed me to become a decent competitor & my handgun scores increased substantially !
I preferred this swing-away disc option above all others commercially sold because the suction cup models fell-off & were in my way when not shooting & hated the sticky crud tape left on my eyeglasses lens.
This swing-away device enables you to see both-sights & the target clearly, I also use it for hunting.
I replaced the glass lens with the bottom of a plastic 35 mm film canister & drilled a .040 hole. That dia. hole works perfect for my eyes but you might require a smaller or larger dia. hole so maybe best to try a smaller hole first at the range & take a few larger drill bits with you ? you want a hole with sharp edges, can often use a larger sized bit to trim away any plastic residue.
My 40 year old original jewelers loupe 'frame' that is shown with the black disc is no longer available but the newer style of loupe frame shown in 2nd photo works equally well. This loupe is available on Amazon for about $5.00 shipped, the extra disc with arm can easily be removed or used to provide different peep options if needed.