Well MB4401 Series Sniper Rifle Upgrade Kit

Description

• High quality stainless steel spring, piston and spring guide
• Lightweight design keep total rifle weight minimal
• Smooth and precise operation part OEM by WellFire
• Spring Strength: About 470 – 500 FPS
• Compatibility: Well MB4401, MB4402, MB4403, MB4404, MB4405, MB4406, MB4407, MB4408, MB4409, MB4410, MB4411, MB4412, MB4413, MB4414, MB4415, MB4416, MB4417
• Package Includes: 1X Upgrade Spring, 1X Spring Guide, 1X Piston