Type: Blowback CO2 BB Pistol. Manufacturer: Distributed by Umarex. Model: HK USP. Materials: Metal & Polymer. Weight: 2.15 pounds (975 grams). Barrel: 4 inches, metal non-rifled. Propulsion: CO2 x 1. Action: Semi auto single and double action trigger. Ammunition Type: 4.5mm steel BB's. Ammunition Capacity: 16 round drop out full size metal magazine. FPS: Claimed 325 I really didn't mind the previous non-blowback CO2 BB version of the HK USP as it had a full size metal magazine and metal slide making it feel great in the hand while still looking the part. That said having a full blowback version with a true single action trigger makes this the obvious choice for me. I'm really looking forward to shooting my Umarex HK USP Blowback CO2 BB Pistol and seeing what kind of fps velocity and accuracy we get from it in the Sea Can! Read full article here: https://www.replicaairguns.com/2018/9/6/umarex-hk-usp-blowback-co2-bb-pistol-table-top-review Buy Umarex HK USP Airguns in our Canada Replica Airguns Store: https://www.replicaairguns.ca/search?q=usp Buy Umarex HK USP Airguns in our US Replica Airguns Store: https://www.replicaairguns.us/search?q=usp