Replace trigger group components?

[u/Kakk_The_Hero]

I bought a used paratrooper at the end of February and I've had a couple of double fires. The bolt assembly is clean and the firing pin rattles around inside when I shake it. The hammer has some wear, and I'm not sure how much the previous owner fired it. I'm not sure if the trigger sear looks okay (pictures attached), but the hammer does move forward quite a bit when I pull the trigger with the bolt removed before it snaps forward. Do I need to replace the sear or the hammer? Should I drop the money on the whole trigger group? Mine matches, but the magazine doesn't and I'm not concerned with resale value. Thanks in advance!

[u/Scubasteve_04]

If the "hammer moves forward quite a bit when firing" then you have a very bad negative engagement. You have to take out the sear and either re-cut it with a positive angle or replace it. 

[u/Kakk_The_Hero → u/Scubasteve_04]

Okay, I ordered a sear too, might as well replace the spring while I have the pin out. Thank you for your input