Ryohin Buhin E&C Aluminum Frame & Exterior Parts Set for M4 Series Electric Guns, Colt M4A1 Metal Receiver Conversion Kit with Realistic Engraving

[Compatible Air Guns] ■ Compatible with standard electric guns M4/M16 series. [Installation Ease] ★★☆☆☆ - ★★★☆☆ | The gearbox is compatible with Ver. 2, but depending on the manufacturer, adjustments such as sanding down interfering parts may be necessary. *Not compatible with next-generation electric guns. [Note about the outer barrel] The shape of the outer barrel mounting base has been changed from the previous "three grooves" to "two grooves" with the new batch. Therefore, when using genuine Tokyo Marui or general electric gun outer barrels, you will need to sand down the protrusions. This is an aluminum metal frame "realistic engraved model" compatible with standard type electric guns (Tokyo Marui and overseas-made AEGs). Instead of white markings, the model is engraved like the real thing, allowing for a more realistic M4 customization! This is a luxurious conversion kit that includes frame parts such as upper and lower frames, charging handle, dummy bolt, port cover, bolt stop, and magazine catch!