FUSION ENGINE™ DROP-IN KIT (LMG) SAI the UDR-15 features newly designed

the UDR-15 features newly designed skeletonizing with enhanced aesthetics

- Latest M-LOK system allow all kinds of Mispec attachments

Physical push-pull operation made for Airsoft/Starting Stoping recording

This EMG Guardian also comes with a built-in ACETECH tracer unit already installed

Including two detachable radio pouches under the side panels

FUSION ENGINE™ DROP-IN KIT (LMG) SAI the UDR-15 features newly designedThe Original HPA Rebel The Fusion Engine was released in 2011 and was the first new HPA system to hit the airsoft market in over two decades. This is the system that started the HPA revolution and has set the benchmark to which all other systems are measured. Although many have followed it, the Fusion Engine is considered by most to be the best. This system won "Best HPA Engine" the very first year Popular Airsoft added the HPA class to their Players'