sig mosquito....which ones had all the isssues

[chola]

what years were the bad ones...for lack of a better term
I am considering a partial trade on one but have not really alot of knowledge about them.....thanks in advance

 

[greywolf67nt]

I own 3 of them and only had problems with the one but it was a hammer shape issue. There was a hump on the hammer face so slide kept hanging up on it. @0 minutes with a Dremmel and a file and works 100% now.
Mine are great plinkers.