The new trigger is a drop-in part and while Apex recommends a gunsmith install, if you can remove your P320’s fire control unit you’re halfway there to installing the aftermarket trigger. It’s a simple upgrade that takes as much time to figure out as it does to complete. The install process doesn’t require any tools at all, you just pop out the standard trigger and replace it with the new part.Apex is an expert when it comes to duty and competition triggers and if anyone can take the SIG P320 to the next level they can. The Flatty flat-faced trigger is only the first step when it comes to P320 tweaks and it’s plenty affordable at $44.
While the two handguns share more than a few components, Apex warns that the P320 Flatty isn’t compatible with the P250, the double-action only precursor to the P320. And even though the P250 has its hangers-on, the greater shooting world has adopted the P320 as the best new polymer SIG, so the more Apex treatment it gets the better.
As far as simple upgrades and tweaks go the Flatty is a straightforward enhancement.