RedWolf Airsoft announced the availability of the Action Custom SL-MK4 AEG which is based on the British Sterling Gun that was used for 50 years, from 1944 to 1994. You can get one for US$480.00 at their online store... "The Sterling submachine gun is a British submachine gun which was in service with the British Army from 1944 until 1994, when it was phased out with the introduction of the L85A1 assault rifle."