Now you can customize your KWA KM4 to suit your style of game play!
The SR Series has been the go-to name in Airsoft for AEGs, and now you can add the stylish and functional free float rail system to match the look that you want. Made of high strength aluminum alloy to last for years.
KM4 SR7 Rail- 156mm
KM4 SR10 Rail- 236mm
KM4 SR12 Rail- 286mm
*Limited quantity, get them while they last!
KM4 SR Free Float Rail Base Ring Assembly is required for assembly.
The KM4 Series complete upper receiver has the forward assist button and ejector port door preassembled, and also comes with the charging handle and mock bolt plate. This piece fits all KM4 Series except for the new KM4 KR series, which means it is compatible with all SR, CQR, and Battle Rifle AEGs, as well as the KM4A1 and the Commando.