I have a RedHead 'Blackout' turkey tube for sale. It's a .575 and fists most Winchester, Browning Invector (not plus), Mossberg 500, Weatherby, Savage/Stevens, H&R/NEF and maybe more. It's your responsibility to know the choke fits your shotgun. It's made by Carlson's for RedHead. I shoot this same exact choke in my 301 except it's branded Cabela's BlackMaxx. It's shoots a very good pattern with #5's and #6's. asking $35.00 shipped lower 48 or swap for a different size. PP preferred (no fees on me) or USPS money order.
thanks for lookin'