Straight from me: Do not use any other trigger with our P320 Competition Trigger Kit components.
Reducing pretravel via an adjustment on the trigger defeats the sear safety cam, messes with trigger mass balance & tolerance for impact, and degrades striker lock integrity.
I invented the sear safety cam feature around 2015 to enhance drop safety in our original P320 Competition kits. We made our system available to my friends in NH for incorporation into the Voluntary Upgrade.
Our modern P320 AST & AHT triggers effectively and safely reduce some gross pretravel and slop via optimal fit and finish, while supporting the Voluntary Upgrade fire control system to which I contributed. Our complete P320 Competition Trigger Kits provide the best possible pull characteristics to be obtained, consistent with the margin of tolerance for impact and rough handling we demand for your safety.
And anyhoo, there is literally nothing to be gained by sacrificing mechanical safety for that tiny reduction in travel which, unlike the purely mechanical qualities of overtravel, pull weight, and break texture, is best accommodated through proper technique and training.
If you don't believe me, ask Mason Lane, Isaac Lockwood, Yong Lee or James Delambert.
Thanks for reading and Merry Christmas!