Will this work?

[SFCRangerDoc]

I want to buy a spare barrel for my great grandfathers S&W M&P model 1905 3rd change. It currently has a custom cut down barrel the LAPD armorer did back in the day for under cover work but I'd like to have another barrel as an option for later on.

I found the below barrels on ebay

http://www.ebay.com/itm/WWII-Smith-Wesson-M-P-Victory-38-S-W-Cal-5-Revolver-Barrel-Pin-UNUSED-/290815271442?pt=Vintage_Hunting&hash=item43b5f0e212

http://www.ebay.com/itm/SMITH-WESSON-MODEL-10-6-38-SPECIAL-FOUR-INCH-BARREL-/121326080601?pt=LH_DefaultDomain_0&hash=item1c3f991259

and am wondering if either of those will work? I THINK it will it looks like the right profile, etc...anybody know?

Doc