It doesn't sound loud (?). The cocking mechanism seems to make the most noise in this video.
I think the pump model is great for those just getting into the pcp hobby but I like the lighter, pure pcp model.
Prod (tuned by Paul B., LW barrel, RB grips, ACE Folding stock, camo, TKO & JG brakes)
Sold: .22 Mrod "The Toad" (tuned by Paul B., 18" LW barrel, Toad-A-Flage camo)
Sold: .25 TT Mrod w/ reservoir and shroud extensions