A Plus Airsoft 6.08mm Nickel Coated Copper Rectifier Inner Barrel for AEG (370mm) reg_SK or if you choose

or if you choose

Ready to go for 350FPS without modification

and will provide the largest ability of the spring

IMI Defense CG1 Combat Pistol Grip for M4 GBB Series (Olive Drab)

Featuring "SAND STONE BLACK STOCK"

A Plus Airsoft 6.08mm Nickel Coated Copper Rectifier Inner Barrel for AEG (370mm) reg_SK or if you chooseA Plus Airsoft 6. 08mm Nickel Coated Copper Rectifier Inner Barrel for AEG (370mm) Internal diameter 6. 08mm built for precision shooting Copper Construction (Nickel Coated) Perfect for tighter grouping & more accurate shooting It may add 20 30 fps when switching it with a standard inner barrel but it will also potentially make your AEG more accurate Suitable for Airsoft Electric Gun AEG Rifle Length: 370mm Inner Diameter : 6. 08mm NOTE: For custom