KJW M4 R.I.S Gas Blowback Rifle Ver. 2 airsoft BB 4 model features the modular

4 model features the modular backstrap system which allows you to change the fit and feel of the grip to better suit your hands

1 Echo1 LiPo: 20 BB Caliber: 6mm Bearing Size: 8mm steel bearing Body type: Plastic Gearbox Reinforced: Re-inforced version 2 Gearbox Type: Version 2 Motor Type: Long type standard motor Sights included: Troy flip up front and rear sights Outer Barrel Construction: One piece metal Metal Specifics: Troy RIS

Magazine Capacity: 25 + 1 System: Gas Blowback Gas: Green Gas

and polymer battery stock

KJW M4 R.I.S Gas Blowback Rifle Ver. 2 airsoft BB 4 model features the modularDescription: Weight: 11 lbs 36. 5 x 11 x 4 (in) Capacity: 32 rds Velocity: 450 fps Metal Components: Body, Rail System, Barrel Realistic blowback system 3 rail covers included Railed upper receiver Aluminum outer barrel Flip up front and rear sights Steel and metal alloy internal parts provide great reliability Heavyweight magazine