No it won't work. The center conductor of the RG11 is much bigger than RG6. RG11 connectors reduce the size center conductor to fit inside of a standard cable connection.
Item Name: FS/FT 14.5 Upper
Location: Marietta
Zip Code: 30060
Item is for: Sale or Trade
Sale Price: 350
Trade Value or Items Looking For: 350
Caliber: 223/556
Willing to Ship: No
Bill of Sale Required?: No
Item Description: Matrix Arms (company that makes uppers/lowers for Ruger) 7075...