To my knowledge I have only ever handled one 34" 20 gauge and it was the one in the link below. Unfortunately it was not a Parker. As much as I liked the gun I was unable to force myself to buy it with the barrels configured in a vertical fashion, the high price probably had a little to do with it as well. It's been on the market for right at a year now.
https://www.gunsinternational.com/gu...n_id=101172056