Love it a must have for any glock - Ghost Inc Ultimate 3.5 Pound Trigger Connector Fits All Glock Models except 42 and 43

not really sure how much it self cleans but man this thing really frees up the trigger pull and takes away all the grittiness and it's super easy to drop in as long as you know how to remove the pins from the glock and disassemble it it's just hard to learn at all