I don't know what Cold Steel's is like, but most "repair sections" I've seen require the section of the upper receiver that has the trunion in it to be intact.My question is are there any repair sections other than the cold steel products one out there that will complete this kit or am I out of luck? - Thanks
Right now the only two options I can give you is these from Inter Ordnance, both are FFL items.
Upper blank, no rear trunion, no sights.
I.O.INC: SR-41 Receiver, Empty
Upper with barrel, trunion, and sights ( but no front sight guard )
I.O.INC: SR-41 Receiver w/Barrel & Sights