Old, but still worth posting juicy details. Interesting how the artist went with a JP receiver set.

Upper Receiver: JP Enterprises CTR-02 Billet Upper
Lower: JP Enterprises CTR-02 Billet Lower
Barrel: Government Profile 14.5" Barrel with carbine-length gas system and low-profile gas block
Muzzle Device: A2-style Flash Suppressor
Handguard: Knight's Armament M4 RAS
Stock: VLTOR IMod
Foregrip: Knight's Armament Vertical Foregrip
Optic: Trijicon ACOG TA01NSN
LAM: Insight AN/PEQ-2