Rapid freedom dispenser - Fostech Echo AR-II Drop-In Binary AR-15 Trigger

This runs more reliably compared to the other brand (I have both Fostech and BFS) due to the trigger lock/sere that makes sure the bolt is in battery before the trigger can be released. BFS ran smoothly too but you can easily shoot it too fast and release the trigger before the bolt is back in battery.

Fostech’s design prevents that from happening, but did encounter an issue. I test fired it with a DD Mk18 10.3 running an OSS flow through suppressor with an H1 buffer and I experienced bolt bounce after mag dumping my first 30 rounds. Every after 4 rounds ended up with a light primer strike on the next 30-round mags i tried to dump, so I did my research and found out that it’s a common occurance for this system, and that an H2 buffer was recommended to mitigate the bolt bounce. I just ordered an H2 buffer and will see if Fostech’s recommendation of heavier buffer will fix the light primer strike issue because of the bolt bounce.