Fostech Echo Sport Lower. You can imagine my anger when i got my echo after already owning the bfs. The trigger block that makes the whole thing work doesn’t extend upward far enough to catch on the back of the bcg and get held forward into the safe position.
About a week later it arrived. From an operational standpoint, the only difference the operator will notice is that the selector for the echo operation is located inside the trigger well on a paddle. You can imagine my anger when i got my echo after already owning the bfs.
The price is for the echo sport trigger only*** ***as with all fostech products all sales are.
I was using an aero m5 upper&lower with a faxon bcg. As i understood the fostech echo bolt carrier it has a radius cut at the rear of the bolt carrier instead of the standard straight cut. 2 hours 23 min ago by skully1. The fostech echo sport trigger is more efficient, less complex and most importantly less money from other binary triggers.