www.replicaairguns.com Type: Non-blowback CO2 BB Pistol. Manufacturer: Distributed by Crosman. Model: MK45. Materials: Mostly plastic. Weight: .63 pounds (281 grams). Total Length: 7.25 inches (184mm). Barrel: 4.5 inches (114mm) metal non-rifled. Propulsion: CO2 x 1. Action: Semi auto non-blowback, DOA trigger. Ammunition Type: .4.5mm steel BB’s. Ammunition Capacity: 20 round drop out metal stick magazine. FPS: Claimed 480. I personally prefer blowback Airguns that have a more solid weight and feel to them with more working parts, but again there is a lot more that can go wrong and parts tend to complex parts wear out over usage a lot quicker than a more simple design like in the case of the Crosman MK45 CO2 NBB BB Pistol. Price is also going to be a lot less when looking a more simplified Air Pistol like the Crosman MK45, as the plastic build is a lot cheaper to produce. Another bonus with non-blowback CO2 airguns is that they do tend to have a much higher velocity and also generally you will also get more shots per CO2 than a similar CO2 Blowback Pistol. It really depends what features you want more and in this case you also get a more cost effective Air Pistol with plenty of shooting enjoyment. A couple other strong points to mention about the Crosman MK45 CO2 NBB BB Pistol would be the fiber optic sights front and back and its sharp l looking two tone layout. Read my full written review here: www.replicaairguns.com/posts/2023/11/14/crosman-mk45-co2-nbb-bb-pistol-table-top-review Buy the Crosman MK45 CO2 NBB BB Pistol in Canada: https://www.replicaairguns.ca/crosman-mk45-semi-auto-bb-pistol Buy the Crosman MK45 CO2 NBB BB Pistol in the US: https://www.replicaairguns.us/crosman-mk45-semi-auto-bb-pistol