Memory says the Compact is made by S&W and the full size was made by Walther (Umarex). I may have those backwards.
I concur, having had the Compact and was going to buy the full size till I found out it wasn't made by S/W like the Compact is.
Areoflyer is correct about Umarex, who also makes a few of the .22LRs that Colt, Walther and Beretta and others commission to do in their name.