Originally Posted by josbo28
Can a right side decocker lever be installed on a pistol that only came with left side decocker?
In my limited experience, I've not seen a single side, decocking lever on a P90 from the factory.
So, without seeing your pistol, my guess is that yours has a right side lever in place now, but the lever portion has been ground off. Something similar to what was done on this: P89
(Photo by TruthN0tRelative)
If that's the case, then yes, a stock right hand lever can be installed.