If you are looking to build a 9MM Rifle, then this bolt is exactly what you will need to ensure smooth cycling with any standard fire control group. Our bolts comes with ramps in a nitrided finish.
Due to the plethora of dedicated 9mm lower manufacturers in the open market manufacturing lowers without the guidance of mil-spec dimensions, we can not guarantee every dedicated lower will cycle without any issues.
2 of the most common issues we see is: (1) Ejectors being pinned to high causing the BCG jam in the upper. (2) The angle in which the magazines go into the lower, in addition to the magazine used, point the nose of the round too high up causing the round to jam.
If you are unsure about fitment, please contact our office.