AKA Steel Hammer Set for Marui G17 GBB M203 The design of this cartridge

The design of this cartridge has patent

scope or accessories on this gun

Front Sight and 240mm Outer Barrel With Flashider (14mm CCW)  Include Nylon Fiber Pistol Grip

- Functional Bolt Safety System - Bolt hold & trigger turn to safety when magazine is empty

AKA Steel Hammer Set for Marui G17 GBB M203 The design of this cartridgeAKA Steel Hammer Set for Marui G17 GBB Steel Construction Suitable for Tokyo Marui G17 Series Gas Blow Back Rifle Package Include Steel Valve Knocker, Steel Hammer Sear, Steel Hammer with 8mm Bearing, Valve Knocker Spring, Hammer Sear Spring, Hammer Spring SKU AKA 015 MG17 UPC N A Item Weight (gram) 18 Major Color Black Built Material Steel Manufacturer AKA Disclaimer As always, upgrading Airsoft Gun require necessary skill & technique to dissemble