Mossberg 590a1 rear sight question

i have the 14in bbl, i need a rear aperture rear sight to put on my rear rail. to replace the factory one, any ideas ty
There aren't any picatinny irons that sit low enough to work with the OEM front sight. You need to get a rail with an integrated rear sight like from XS sights.
 
Probably factory, so the factory front sight is the lowest of the 3.
This could cause an issue , in that the 14 inch barrel mossberg have a tendency to shoot high and now if you put a ghost ring sight on a rail you might not be able to lower it enough to bring down the point of impact.
Remember, the rear sight is your friend, it goes where you want , want to shoot high , raise it , want to shoot left , move it left.
If you're sticking with the rail, a red dot would be the best option.
Or something like a UTG Sub compact rear sight might work.
 
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