Toronto Airsoft can get you up and running for a game with their Custom Pre-Upgraded E&C AEGs. They do have a long list of E&C AEGs ranging from the M16 series, to M4s as well as HK416-style ones. To order the custom E&Cs, you'll need to contact them what they have ready for you to take the field. Here's Vince to tell you more about these.