WTB Remington 870 20 gauge Undertaker or similar choke for lead shot

[TRG3]

I've had great success with the Undertaker choke tube in my Remington 870 12 gauge and would like to find one for my Remington 870 Express 20 gauge or something similar with a choke diameter of .565 to .575. Thank you.

[Roost 1]

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