Gate-LOK™ Flash Comp .30cal (7.62mm) 5/8x24

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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.

The Gate-LOK™ Flash Comp 7.62mm provides high performance mounting options for Griffin Gate-LOK™ Silencers as well as a 30 caliber (7.62mm) interface for the QD Blast Shield. The Flash Comp was made with the same performance features as its 5.56mm counterpart but with a 5/8x24 threaded interface and integral overtravel stop. Pre drilled hole to aid in pinning and welding. The Gate-LOK™ Flash Comp .30cal (7.62mm) is included with the 30SDK silencer. CNC Machined and outside diameter ground from high strength, corrosion and wear resistant, 17-4 precipitation hardened stainless steel, the Gate-LOK™ Flash Comp .30 cal (7.62mm) is black oxide finished. 5/8x24 threads offer compatibility with most 7.62mm firearms on the market.

Diameter: .863"
OAL: 2.770"Added (2.15")
Weight: 3.2 ounces
Materials: 17-4PH Stainless Steel
Finish: Black Nitride
Attachment: 5/8x24 Thread


  • Ambidextrous QD Mount
  • Free of wear prone geometry
  • Functionally engineered for maximum performance
  • Sacrificial baffle to extend the life of your suppressor (excludes Flash Supp.)
  • 17-4 PH Stainless steel to withstand hard use
  • Griffin Laser Logo Marked
  • 5/8x24 industry standard Thread Pitch for most 7.62mm firearms
  • Shim set Included
  • Integral Over-Travel stop
  • Compatible with 30SD, M4SD series silencers, and QD Blast Shield

Additional Details

7.62mm (.30)
Thread Pitch:
Attachment System:
Type Of Part:
Muzzle Device

8 Reviews

  • 5
    Great product!

    Published by Steve Mosier on 9th Dec 2021

    Easy install, great quality!

  • 5
    30 SD mount

    Published by Steven Pinson on 25th Jul 2020

    None better out there, especially for the SD 30 suppressor.

  • 5
    30SD Muzzle Brake

    Published by Mark on 2nd Dec 2019

    Fine Craftsmanship/ includes shims
    Great product

  • 5
    flash comp

    Published by lee maxey on 5th Feb 2019

    Excellent I have one for my 5.56 and I'm planning to purchase a suppressor from you.

  • 5

    Published by Mike on 20th Nov 2018

    This is hands down my favorite muzzle device! Griffin has excellent muzzle devices. They have a super tough nitrde finish on them that holds up extremely well to heavy wire wheel cleaning after running a silencer on them. I wish they made a 30 cal hammer comp.

  • 5

    Published by Kilroy was here on 15th Sep 2018

    Already running 2 Griffins brakes in 5.56 which I have been very pleased with. Building a 30 cal that’0Is getting a Griffin can in near future so need brake compatibility in both calibers.

  • 5
    Well made product.

    Published by Craig Smith on 10th Sep 2018

    My 30SD finally got out of ATF jail after waiting a year and a half. I wanted an extra mount for future applications before the model became obsolete. Very well made, and the included shim make timing very easy.

  • 5
    High Quality

    Published by Unknown on 19th Aug 2018

    Very high quality and extremely well engineered. Easy to install. Times up well and Performs better than expected.

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