The Discoveryline (DL) range of products, are good entry level products, ideal for first-time users new to Airsoft. The Discoveryline products are targeted mainly at 1st-time buyers and ‘backyard players’. The Airsoft guns in this range are primarily made of plastics and have a lower muzzle velocity (<1,0J.) They cannot be modified or upgraded. The Discoveryline products typically come as Value packs, and are ready to play (RTP) straight out of the box, which means that everything you need to get started is included in the box.