Zep, within 20 yds probably. 30 yds maybe. Aim between the ear and eye, if they are in the water, it'll be dang hard - you'll have to hit them right at the water line.

Silencers or cans are legal to have on air rifles without any BATF paperwork or tax. If they were the threaded on kind, then it might get kind of sketchy. The BATF could say that it would be possible to remove it and put it on a firearm.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).