Early WIP:

Based off of:

Not going into Halo, my first time modeling something "just for fun". While I realize that the reference I'm using is a modified SCAR, I'm going to make it into an original weapon.
Also, before anyone goes "Grenade Launcher + Silencer = WTF?", that's a flashlight at the bottom of the barrel there.

Going to make some deviations from the reference once I get a bit further.