The HFC/TSD Compact Tactical M166 Metal Full-Auto Pistol is a great new gas blow back pistol for beginner airsoft players. The slide is constructed of metal, and the lower receiver and grip are made of very durable polymer. The safety switch is also the fire selector with semi and full auto position. Target acquisition is made very easy by the dots on the front and rear iron sights. Laser and lights can be attached to the gun via rail adapter for the lower receiver. This gun also comes complete with a 30 days manufacturer warranty.