This is just the release hammer..You cannot just put the hammer into a regular TS trigger group and make a release out of it..The Original non release triger group has to be modified and parts added to complete the release trigger. Kolar is the only one that has the rest of the parts to complete the change-over.
Ask me why I know this ..My $500 trip to Kolar..That is why.
Dropped it off in the morning and picked it up after lunch,Great Service
User 1..Now you know why it is a $500 job..It is more than the hook..The safety also works on the converted trigger group..Must be something to do with some gov safety or Lawyer requirement..Rags at Kolar can explain the whole thing..It is not a 15 min.job..Once it is done you can just switch hammers to change from release to pull..It is a neat conversion and you can push the hammer pin out with a pencil to change the hammers as there is no pressure on the hammer after it is in the released position.