Will this work in a piston drive AR? Adam’s Arms to be specific — 3 Answers

The cam pin will, and in fact that's where this style of pin is most beneficial. However you would be throwing the gas key in the trash. A better option for you would be the cam-pin only sku here: https://www.opticsplanet.com/pof-00307-roller-cam-pin-assembly-223.html

Who are these supposed “Experts?!” Tell me how “Expert” a DIRECT IMPINGEMENT gas key and roller can pin will FIT ON A ONE PIECE carrier that has a PISTONS FACE MILLED DIRECTLY INTO THE CARRIER so HOW would one REMOVE A SOLID CHUNK OF HEAT TREATED STEEL so the gas key will fit AND FUNCTION?! ONLY thing that WILL work is the CAM PIN ALONE which is ALL the poor person who asked the question NEEDED since ZERO PISTON driven bolt carrier has a GAS KEY so the cam pin ALONE CAN EASILY BE INSTALLED WITH ZERO TOOLS JUST LIKE ANY OTHER CAM PIN! FYI to ANYONE with a piston driven AR ALL you need is the roller cam pin which has become a STANDARD in ALL my piston driven AR’s as they REALLY DO WORK VERY WELL to smooth out the cycling!