I just joined the ranks with a new CZ P09. After ordering the pistol, I ordered the MCARBO spring kit which arrived the same day my P09 was ready for pick up. I installed the MCARBO kit while following the online video. I "wet" sanded and polished the select components as recommended and reassemble the pistol. Overall, I am very pleased with the resulting DA/SA trigger pulls. I do not have an accurate pull gauge, so my assessment is strictly by tactile perception. Coming from 1911s and M&P triggers, this is a different beast.
I did discover an issue while dry cycling the trigger; several trigger failures to reset. I oiled up the action and everything seemed to smooth out. After the first range trip, I started having more trigger reset failures. I can "create" the failure with a strong two-hand hold, one-handed the trigger always resets. I spoke with MCARBO and they are sending a new TRS. I debated an individual spring buy from CGW, but liked the package deal from MCARBO. Will reassess once the new TRS arrives.
Regarding the CZ P09, this may have brought me to the dark side. I was looking for a 5" range gun to have some fun modifying. I passed the an M&P CORE M2.0 for the P09. One day one, the P09 shot significantly better than my "trusty" M&P fullsize. The M&P may be sacrificed to purchase a P07.....
UPDATE:
Called MCARBO on Friday afternoon and had the replacement TRS on Tuesday; quick response! MCARBO suspects the original TRS in the kit was under desired weight. Quick install and the trigger is now consistently resetting for the next shot. Very pleased with the improvement in DA/SA pull weight!
Next step is a compensator. Leaning towards the Parker Mountain Machine comp at this point. Like the full profile, mounting method and single port.
