Was at the range yesterday with my used FEG SMC in 9x18. It's verysimilar to a walther ppk. A couple of times the hammer would stay at full cock and the trigger wouldn't release it nor would the hammer drop safety. Took the grips off and found that the spur on the hammer that engages the sear had slipped behind the sear. I was able all times to pull the trigger and push the hammer forward and that put the hammer where it belonged. Then for say three or four magazines it wold function properly, Then for no reason it would het fouled up. I'm guessing that i've got either a weak spring or a worn hammer or sear. Any suggestins would be greatly appreciated