My Bushmaster M4A1 does.
My Bushmaster Carbon 15 does not.
Mike
I do not see M4 feed ramps, does this make any difference in the real world?
You're g2g.
Is this a new production gun? Are they still making the carbon receivers?
I hope you didn't buy this for a high volume shooter.
You're going to have to be careful with cleaning solvents around it.