● Integrated SSS.III
● SMART TRIGGER
● Short Stroke Trigger
● Intergrated T DEAN
● Tactical Fire Selector Lever
● Lightweight M-Lok handguard
● Upper Receiver M1913 Rail
● Window T-Mag 
● Reinforced Full Metal Teeth Piston
● Performance Grade AL6061 Cylinder and Piston Head
● Metal Air Nozzel
● QD Steel Spring Guide Design
● One-piece Metal H-UP
● Release Spring Function
● 8MM Gearbox Bushing
● Tactical SF1 Stock(Foldable, Retractable & Adjustable Cheek Rest)