I think it is yet another way to keep costs low. The Rugers are quite inexpensive, but there are some corners cut (IMO) here and there.
My Vaquero now has a cam-cut steel ejector rod housing on it now, with the nifty Colt-style ejector rod.
That, the free-spin pawl (what a wonderful idea), and some stag grips...factory stock is boring!
Alex