It's not as good as it looks & certainly isn't worth the extra cost. The moderator is virtually a dummy and has no effect on accuracy. If you're looking for a Co2 the S & W 586 in 6", the Colt 1911, the standard 92FS or the Walther CP88 with the compensator are all good buys. Most of the Umarex silencers are pretty ineffective, try and get hold of a silencer adaptor that will accept a 1/2" unf silencer, you'll be much better off.
Hope this helps
ATB
UBC Resident Cowboy
St Paul of 55
Been there, bought it, tried it, sold it