Not sure if this has been asked or addressed before, but, are there after-market windshield wipers available?

I'm not just referring to automotive wipers, but aircraft mounted wipers. Such as what is on the Bell Jetranger, or even the DC3.

I have noticed that when a particular flying machine had wipers on the full size version, on the model they are usually ignored, or if prominent enough, as on the afore-mentioned Jetranger, they are molded into the canopy(I have the old Heller-Humbrol 1/50 Jetranger), and as I have, on occasion, worked on the real thing, they are a lot more noticeable than that.

So, I ask, are there any available?