GK12
- Ver 3 Gearbox with Empty Magazine Shut Off (Requires Compatible Magazine)
- Easy Access Quick Change Spring (with Tool Built into Gas Tube Plug)
- Pre-Installed MOSFET and Electronic Trigger Unit (E.T.U.)
- Programmable Pre-Cocking and 3 or 5 Round Burst
- Folding, Retractable Stock
- Metal Rotary Hop Up Chamber
- 120 Round Polymer MidCap Magazine
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