Here has been my recent project: A Classic Army SCAR - H. I've upgraded it to fit the role of a support weapon.
Externals:
D-Boys Scar-H Stock (which I broke at my last game, another one is on the way)
Magpul 120 Round P-Mag
D-Boys M203 Grenade Launcher (trigger guard is removed)
40MM Grenade Bandolier with 3 Kings Arm and 2 Matrix Grenades
Kings Arm Side Mounted VLTOR Side Mounted Bipod
Action Outer Barrel Extension
Scar CW Metal Flash Hider (with thread for Silencer)
Matrix Silencer
Eotech 552 Holographic Sight
Hero Arms 4x Flip to Side Magnifier
Tachyon XC Side Mounted HD Camera
Internals:
Systema Hopup Unit
Prometheus Tightbore Barrel
AEG Burst Wizard MOSFET
Rewired for Deans
7.4 Lipo