WTB/WTF Remington 870 20 ga Shur-Shot buttstockim

[Crappiepro]

I'm looking for a Shur-Shot black synthetic buttstock for my Remington 870 20ga.
I have a brand new stock with the 3 combs to lengthen lop.

[FloppinTom]

FYI
Mesa Tactical makes an adapter that allows a 12 ga shurshot to fit a 20ga. I used one to put a collapsible 12ga stock on a .410 for grandkids. Only helps butt stock will still need forend.

[Holtbensley]

Would you sell the LOP combs?