5KU CNC Aluminum Lightweight Blowback Unit For Action Army AAP 01 GBB Pistol Airsoft Guns (Green) Tokyo for additional piston mass (from

for additional piston mass (from 30

Precision Optics Technology for extreme reflector performance

Silverback Picatinny / M LOK Short Rail for TAC41P

Systema Full Tune-Up Kit (FTK) 99 MP5 M120S Expert Set

5KU CNC Aluminum Lightweight Blowback Unit For Action Army AAP 01 GBB Pistol Airsoft Guns (Green) Tokyo for additional piston mass (from5KU CNC Aluminum Lightweight Blowback Unit For Action Army AAP 01 GBB Pistol Airsoft Guns (Green) CNC Aluminum Construction Blow Back Unit BBU Design For Upgrade the Original Parts More Durable Allow for your Blow Back much faster Cycling Suitable For Action Army AAP 01 Series Gas Blow Back GBB Pistol Airsoft Guns