The Guarder Enhancement can be fits (Base on MARUI Type, Optional)

System : HFC 134A GAS BLOWBACK/Adjustable Hop-Up
Material : Full Metal Alloy, Nylon Grip
Initial Bullet Speed: 85 m/s, 284 FPS ( 0.2g BB)
Weight : 865g (With Megazine)
Magazine : 25+1 Rounds

Item No.: KJ-M9A1
Suggested Retail Price: USD 165.00