>>63948527
>Langdon doesnt even offer NP3 coating on a px4 so their "trigger job" is a fucking mystery other than the 80 dollar trigger bar.
As I understand, it's based off the Beretta Competition trigger group which is chromed or something that's a smoother pull than stock, Langdon performs the trigger job on that. For a while the Competition trigger groups weren't in stock so he did it on basic units but now they're back. If you order a gun from Langdon the option for a full NP3 coating is there, so NP3 trigger bar, trigger group, cam block etc.