Prometheus 6.03 EG Tight Bore Inner Barrel for Airsoft AEG (Length: 407mm) For Marui M4A1/RIS/SR16 /S-System‧SG551 AEG Manufacturer_Rainbow8 Custom Material: 6061 Aluminum Alloy /

Material:  6061 Aluminum Alloy / Fiber Reinforced Polymer / Steel

Safety button act also as a Decocking lever

DP Aluminum Loading Nozzle For TM G17 GBB

: KJ-G23-M

Prometheus 6.03 EG Tight Bore Inner Barrel for Airsoft AEG (Length: 407mm) For Marui M4A1/RIS/SR16 /S-System‧SG551 AEG Manufacturer_Rainbow8 Custom Material: 6061 Aluminum Alloy /For MARUI M4A1 RIS SR16 S SystemSG551 AEG use Features: Made from high quality stainless steel Precision 6. 03mm inner diameter Internally polished with precision crown Length: 407mm Inner Diameter Bore: 6. 03mm Material: Stainless Steel. Compatibility: For Tokyo Marui, Matrix, G&P and other compatible Airsoft AEG Rifles Manufacturer: Prometheus Japan, a part of the Laxlax company