Take a look at the Arcturus AR15 LITE Karambit AEG that is available at Patrol Base... "This compact AR Platform Airsoft Electric Gun is a sturdy and reliable replica, which has been produced with a tough Nylon Polymer Receiver to keep the overall cost down, without compromising on strength. In true Arcturus form, this AEG is brimming with quality of life features such as a Quick Change Spring System, Microswitch Trigger, Ambidextrous Controls (for comfort of left handed players), as well as a 'Performance Air Seal Kit' pre-installed for maximum performance. If you want cost effective, realistic, good internals AND not overly heavy, then the Arcturus Karambit is exactly that!"