FM9 LRBHO
Upper: MIKE-9-PA-7TRI-UR
Lower: F1FMP9BLR100
Mags: OEM Glock 30 rd
I figure someone else has had this problem, and i’m wanting to know how the fix went. First time at the range with this and it’s running great, but LRBHO not catching. Broke it down and found that the cam which the lifter lifts into to roll the rod that raises the bolt catch is raising above the lip of the lower. But it only does that if the upper is off. So when assembled, the cam is not able to lift as high as it should since the upper is lying over top of it. Blowback9 has posted videos describing this exact problem, and i think he just said to dremel the cam down so it’s not raising past where it should. I guess that’s my current plan unless FM has a flatter cam i can use, but my OCD just doesn’t want me to free-hand dremel this thing and ruin it. Any thoughts would be appreciated.