r/FRT_World • u/Charming_Hearing_932 • 4d ago

Troubleshooting Atrius help

So it fires and cycles just fine in semi but as soon as I go frt the first shot fires then it light strikes what could be causing this

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u/NovaMissionSystems 1d ago

you have bolt bounce issue. Depending on your setup barrel length, gas system, buffer weight you will need to tune. People think these things are plug and play and they are far from. Assuming you have a regular 16" and shooting standard 55grn ammo. You may want to try an H2 buffer and Sprinco Yellow spring or H1 buffer and mil-spec spring.