Hi beefaroni Thanks Because every part part can be replaced for modification, i`m using one material per each mod. part. Totall i have 9 materials: (2048x2048) Base Receiver (2048x2048)+(512x512) Sight (Base mat + Glass mat) (2048x1024) Handguard (1024x1024) Magazine (2048x1024) Stock (1024x512) Grip (512x512) Foregrip…