Type: Airsoft Pistol. Manufacturer: KWC. Model: Mauser (M1932 / M712 Schnellfeuer). Materials: Almost entirely all Metal. Weight: 3.15 pounds (1424 grams). Barrel: 5 inches, metal non-rifled. Propulsion: 12 gram CO2. Action: Semi & full auto, single action only with full blowback. Ammunition Type: 6mm Plastic Airsoft BB's. Ammunition Capacity: 21 round full size drop out metal magazine. FPS: 400+. Overall the KWC Mauser CO2 Blowback Airsoft Pistol is that all metal version we kind of hoped Umarex had made, and from what I can tell in the KWC product brochure, this one should be available in both 4.5mm Steel BB and 6mm Plastic Airsoft so this should make everyone pretty happy :) Other than the rather high shot placement I really liked the KWC Mauser especially the super high fps and ultra fast rate of fire in full auto mode. Another must have classic war pistol to add to the collection! Read full article here: https://www.replicaairguns.com/2014/4/26/kwc-mauser-co2-blowback-airsoft-pistol-table-top-review.html Buy KWC Mauser Products in the Canada Store: https://www.replicaairguns.ca/search?q=m712