Hmm, not to sound overly picky, but the "Assault Rifle Barrel" does not look like anything that would be ME powered. There are no propellent gases that need channeling as the barrel is built for. ME weapons are essentially coilguns.
I understand that the team wants things to look better than simply a longer barrel, but I would want the artist to come up with something they did not simply cut off the barrel of a M82A1. It isn't really that immersive and I am sure that some people over there are drooling over the chance to let their thoughts flow a little in more futuristic (and fitting) designs.
Just a little criticism from me. (That does partly goes the same for the Sniper Rifle Barrel that does look suspiciously like a propellent firearms barrel too, though not as glaringly as such).
I hope you guys hear me out and even if it might not find its way into the game because of the limited time still available, DLCs or other games with similar issues might profit from it.