Maybe I'm lost in the ozone but I thought the 10 1/2" SBH came with a steel ej housing. Was the original made from steel and they changed to aluminum later? I bought one new many,many,many moons ago,a NM SBH blued and gave it to a gunsmith to shorten the barrel to the same length as the eg housing(about 5 1/2"). I was sure the ej housing on it was steel but I guess he might have swapped it out for me as other things were done to the gun at the same time. That really made for a nice hunting gun and still would, having full ejection with warm loads.