I was looking at a few if my BCGs because I'm having a problem with a Colt short stoking ( I posted questions on that in the trouble shooting forum)   On the Colt BCG I have it's showing marks in the corner if the ramp so I went to look at one of my aftermarket BCG and the ramp is totally different. The Colt has a much steeper ramp and starts further towards the front and exposes more of the firing pin. The aftermarket BCG the ramp is much more gradual ramp and covers more of the firing pin. The aftermarket BCG shows no signs of wear on the corner of the ramp where the Colt does. So can someone school me on BCGs

you might want to also explain the rest of the rifle - barrel length, what ammo you are having trouble with.  what buffer are you using, etc.

Its been with different ammo and the gun is 100% Colt 16" it has a buffer marked with a "H" on the face