Gunsmithing Knights Armament wrench for Rail P/N 23128

[Crosshairs6]

I have this used Knight's rail P/N 23128 that I need to find a wrench to adjust and install on a carbine. I looked on the Knights Armament website and it does not appear to be listed there for sale. I figured I would ask the experts here before I give Knights a call tomorrow. Any idea where I can find this wrench/tool for sale? If not the Knights Armament specific tool, what have any of you used to adjust this rail? Any information would be great. I have attached a picture of the rail.

 

[NC1911]

5.56 - p/n: 20495 7.62 - p/n: 23383

http://www.knightarmco.com/shop/index.php?main_page=product_info&products_id=114

 

[NC1911]

Part Number: 23386 this is the old style wrench that fits the old style castle nut

http://www.operationparts.com/KAC_Knights_Armament_SR_15_URX_Barrel_Nut_Wrench_p/23386.htm