Unable to attach PSO scope to sks.
Temp Fix: Drag the PSO scope onto the SKS and release, relogg and the scope should be on the SKS.
Dont try to drag it onto the SKS a second time, just relogg after you've done it once.
PSO scope attaches only to the AK family (minus the AKS-74U)
PU scope attaches to SKS and Mosin.
My bad, I accidentaly mixed those two up in my head.
The fix still applies but for the -PU- :)