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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.
The KWA metal receiver carry handle is made to fit almost any railed AR-15 or M16 style receiver and is made of durable metal alloy. This assembly comes complete with toolless knobs to easily attach and detach the handle, and is strong enough to carry the weight of any full metal AR-platform rifle. Use this to customize your KM4, RM4, or LM4 to the look you want. Features a level channel for installation of aftermarket receiver carry handle rail attachments, as well as a sight that has adjustment knobs for windage & elevation.
Now you can customize your KMP9 or KMP9R with one of three color options! Made of extremely durable nylon polymer, the KWA KMP9 upper receivers is made to last for years of reliable use. Choose your color from the dropdown menu.