Armalite M4 ProLine SIR S-System AEG Metal



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The Armalite M4 ProLine SIR S-System AEG, metal gearbox, and RIS system licensed by ARMS (S.I.R. system). The ProLine version features a metal component rail system and receiver, crane stock (for battery), heavier feel, and very solidly built compared to the sportline edition. Uses a 9.6v nunchuck battery with ease. Adjustable hopup. Flip-up rear sight. Quality built gearbox system. This is a fantastic S-System M4 for the money! We're quite impressed with this Pro-Line gun model.Please note, the battery and charger are not included. Uses any standard 9.6v nunchuck style battery.

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