Custom build and licensed by SI

The EMG Arms Custom Built Strike Industries Licensed “Sentinel” M4 comes with the GRIDLOK® Handguard System paired with the Cobra trigger guard and their 25 angled pistol grip. The gridlok is a quick detachable handguard and comes in different colors, a great addition to the Strike Industries line.

EMG Strike Industries "Sentinel" M4


  • Aluminum alloy receiver with licensed Strike Industries roll marks
  • Pre-installed aluminum free float Strike Industries licensed GRIDLOK® Main Body M-LOK handguard with authentic markings
  • The GRIDLOK® Main Body is equipped with top Picatinny rail segments for optics or sights, a front integrated flip-up sight and bottom Picatinny section with integrated M-LOK slots
  • GATE Aster In-line MOSFET, 8mm bearing gearbox with quick-change spring guide fully compatible with most Version 2 gearbox upgrades
  • Neodymium High Torque Motor, CNC high strength gears, full steel rack piston
  • Equipped with a Strike Industries licensed magazine release and bolt catch
  • Comes with a Strike Industries 250 round super mid-cap to keep you in the game longer!
  • Installed with a Strike Industries Cobra trigger guard with a comfortable wide hood and front fang design to help guide magazines
EMG Strike Industries "Sentinel" M4

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