Gate-LOK™ Stealth Flash Hider 5.56mm 1/2x28

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The Griffin Armament Gate-LOK™ muzzle devices interface with Gate-LOK™ suppressors (M4SDKM4SD2, 30SD, and 30SDK) as well as the QD Blast Shield.

This revised generation 3 Gate-LOK™ Stealth Flash Hider provides M4SD sound suppressor end users a high-performance flash suppressor/compensator alternative to compatible A1/A2 Birdcage flash suppressors. The Gate-LOK™ stealth flash hider provides optimal suppressor fit, enhanced flash signature reduction, and reduces muzzle climb. The focus of the Gen 3 revision was to reduce flash as much as possible. Time intensive R&D resulted in a high performance 3 prong flash hider with incredible resonance reduction. These hide flash extremely well and do not ring or ping when fired.CNC machined and outside diameter ground from heat, corrosion, and wear resistant, precipitation hardened, 17-4 stainless steel for maximum durability.

Compatible with the M4SD series Gate-LOK™ suppressor interface.

Includes shim set and over-travel stop washer. This muzzle device is pre drilled for pinning and welding to a 14.5" barrel to achieve a 16" non NFA length carbine.

Over-travel stop tab should be positioned at the bottom of the muzzle device (6 O'clock).

Diameter: .863"
OAL: 2.25"
Weight: 2.4 ounces
Materials: 17-4PH Stainless Steel
Finish: Black Nitride
Attachment: 1/2x28 Thread
  • Ambidextrous QD Mount
  • Free of wear prone geometry
  • Precisely calculated porting to neutralize muzzle movement
  • 17-4 PH Stainless steel to withstand hard use
  • Lustrous Black Oxide Finish
  • Griffin Laser Logo Marked
  • 1/2x28 industry standard Thread Pitch for 5.56mm carbines
  • Shim set Included
  • Over-Travel stop washer Included
  • Compatible with M4SD2, M4SDK, 30SD, and 30SDK suppressors
5.56mm (.223)
Thread Pitch:
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Type Of Part:
Muzzle Device

13 Reviews

  • 5
    Removes muzzle flash

    Published by Ray on 10th May 2021

    I install this device on a 12.5" AR pistol and have noticed a huge difference in flash signature than the original device I had! A huge improvement plus aestheticcally appealing!

  • 5
    Flash Hider

    Published by Sully on 27th Jan 2020

    Great flash hider, quality materials and does an excellent job suppressing the flash. I will be buying more.

  • 5
    versatile applications for my 30SD

    Published by Craig Smith on 10th Sep 2018

    Just got the stamp for my 30SD after waiting 1-1/2 years. I have a couople of 5.56 rifles that I planned to use the 30SD on, so an extra precision muzzle device was needed. Well made and easily timed with the included shims. Works great on my Tavor with the 30SD.