SRC is always the go to brand for airsoft replicas that can be used for World War II reencactord and they have an update to their MP40 series that BB2K Airsoft checks out at their booth... "With very great expectations, I went to the SRC Airsoft stand at the IWA in 2019. The goal of my desire was the new MP40 GBB. Steel embossing, CO2 operation, realistic closing boltsystem have made me very curious. In addition to the MP40 (SR40) it was synonymous to see the MP41 (SR41) as a CO2 blowback model. Was it a prototype that I held in my hands? I hope so! Unfortunately, I was not so enthusiastic about the MP40 :-( The processing, the coating, the function are not finished yet, I hope the SRC improves and delivers us a great MP40."