Type: Air Pistol. Manufacturer: KWC Model:SW40F (S&W Sigma) Materials: Metal slide, plastic frame. Weight: 1.9 pounds (900 grams). Barrel: Metal non-rifled smooth bore. Propulsion: 12 gram CO2. Action: Single action only. Ammunition Type: 4.5mm Steel BB's. Ammunition Capacity: 19 rounds. FPS: 330 fps. Just like my Airsoft review of the KWC Sigma SW40F, this blowback Air Pistol was a lot of fun to shoot, with it's super snappy heavy slide and ultra realistic shooting characteristics. It did seem to go through a lot of CO2 very quickly which is not uncommon for this style of full blowback heavy slided airgun, and to be honest I don't really mind since it shot well, felt good in the hand and backs it up with great looks. And heck it's still so much cheaper to shoot than a real 9mm hand gun ;) For those of you looking for something that is similar to a Glock in terms of looks and operation, the KWC Sigma BB or Airsoft pistol may be your only real option here in North America now that the Umarex SA177 is history. Read full article here: https://www.replicaairguns.com/2013/3/7/kwc-sigma-sw40f-co2-blowback-bb-pistol-table-top-review.html Buy the KWC SW40F BB Pistol in Canada: https://www.replicaairguns.ca/kwc-sw40f-4-5mm-blowback-co2-airgun Buy the KWC SW40F BB Pistol in the US: https://www.replicaairguns.us/kwc-sw40f-4-5mm-blowback-co2-airgun