It won't be easy finding a set of orphan 20 ga. Parker barrels. The best way is to first know exactly what you are looking for, and then to search diligently at gun shows and on the internet. And you can bet you aren't the only one looking for this same relatively scarce item that is seldom seen for sale. So save some photos and pertinent dimensions on your phone so you are prepared to buy immediately if and when you see them.
I've found several sets of various orphan barrels at bargain prices simply because I recognized them, while the sellers had no idea what make of gun they even fit. A couple years ago, I found a nice buttstock and forend for a number 1 frame Parker on Ebay. It was listed as unknown gun stock set, and sold for around $50.00 delivered. Last year I bought a good set of 12 ga. Lefever barrels for about the same price. They were also listed as unknown, and were "camo painted" with latex paint which was easily stripped off. In September, I bought nine gun barrels for a total of $35.00 at an Auto Parts Swap Meet. The haul included an unused 44" .50 cal Rice swamped octagon barrel with radius rifling that sells for around $375.00 plus shipping alone. Also included was a nice .50 T/C Hawken percussion barrel w/sights, two unused octagon rifle barrels in .36 and .45 cal., two Greener Martini Cadet frames with a .22 lr and .310 barrels, an unused .410 octagon to round Damascus percussion barrel with Belgian proofs, and two .22 cal barrels. Way too cheap to pass up.
On the other hand, I've been looking for a set of 16 ga. dolls head Lefever barrels to fit a G grade frame, for over 15 years,...with no luck.
