Six printed carbon-fiber-reinforced MAC forced reset triggers for $40, the cheapest way to test fitment.

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This is the same 3DP MAC FRT geometry as the 316 stainless unit, printed in carbon-fiber-reinforced PET and sold six to a pack for $40. The economics are the point: MAC-pattern hosts vary so widely between Cobray and MasterPiece Arms that no vendor guarantees fitment, and 3DP says outright that tolerances differ severely between makes and models. $40 buys you six chances to find out whether the geometry works in your gun before committing to steel.
Printed polymer is a wear part. The open-source Twitch design that competes with it burned through PLA test triggers in as few as 17 rounds; PET-CF is considerably tougher than PLA, but it is still plastic riding against a steel bolt. Buy the multi-pack because you will go through them, and step up to the stainless version once you know the trigger cycles in your host.
Terms match the steel unit: beta batch, sold for R&D, all sales final, not a drop-in part. Fitting and tuning are expected.
Add the 3DP Tactical Solutions MAC-10/MAC-11 FRT (PET-CF 6-Pack) to your build and see how it enhances your platform.