WANTED: Forend Wrench for Remington 870 12 gauge

[Bergie]

I want to change out my forearm on my 870 and I need the 12ga wrench so I don't jack up the wood. It's a one time thing (maybe) so I don't want to drop $25 on a single use tube of steel! Got one I can buy for cheap or maybe borrow (for a cost of a beer of somethin?)