I have the hw110 mate had it about 15months, in .177 , I find it lighter and quieter than my hw100tk, bigger shot count if that matters, fitting the mag is fiddly till you get used to it, it's only 10shot where as the hw100 are 14shot, seems robust, mine did start leaking air a few weeks back, so sent it to my local gunsmith hes sorted the problem, changed all the seals o-rings just incase I got it back yesterday with this 16shot chrono printout which I'm happy with..