The Echo1 M28 utilizes several barrel stabilizers to keep the inner barrel secure ensuring accurate shots each time

Manual and Silver Compensator

Full Metal Frame & Vented Slide

2V micro type battery housed in the grip

this makes it possible to change the firing sequence giving it the ability to operate in both true closed bolt as well as "AEG" mode

EMG NOVESKE Gen 4 w/ eSilverEdge SDU2.0 Gearbox Airsoft AEG Training Rifle (Model: Shorty / Black) Guarder The Echo1 M28 utilizes severalFeatures Fully licensed NOVESKE Rifleworks Gen4 Billet style AR 15 receiver with deep engraved NOVESKE logos and trademarks New eSilverEdge gearbox featuring advanced S. D. U. 2. 0 chipset to manage shot to shot amperage draw (gearbox only pulls 11amps at ~380 FPS) for improved consistency, performance, and instantaneous trigger response making this one of the most efficient stock gearboxes on the market Selectable fire modes with 5 pre set safe semi