01-29-2012, 04:26 AM
Find someone with a working grendel upper, swap bolt and carriers with them. see if that other BCG works in your gun.
I recently had this happen with my 6x45mm build.
Everyone said it had to be a gas system problem but it ended up being the bcg.
BB
I recently had this happen with my 6x45mm build.
Everyone said it had to be a gas system problem but it ended up being the bcg.
BB
