I have a barely used Knoxx NRS for the 870. Was given a Mesa Tactical High-tube adapter, so I don't need the NRS.
It's barely used, $35 + $6 shipping OBO. Will also trade for Mil-Spec CTR.
Can provide pics if needed.
Payment by Paypal (+$2 for fees, or "Gift" payment) or Money Order, no checks.
Sold to 141FE, Pending Funds.