Gate-LOK™ FlashComp 5.56mm 1/2x28

Now: $99.95
(You save )
(15 reviews) Write a Review

Ten years of muzzle device research, design, testing, and manufacturing resulted in our latest revision FlashComp. With winning features of our Hammer Comp integrated, the new flash comp adds an additional sacrificial baffle, offers better flash signature, and is reduced in weight!

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 optimally combines the functions of three traditionally separate classes of devices- Muzzle Brakes, Tactical Compensators, and Flash Suppressors. The Gate-LOK™ Flash Comp achieved a perfect 5 out of 5 in National Tactical Officers Association testing to achieve the rare, coveted, NTOA Gold seal of approval granted to devices which achieve perfect evaluations.

Compatible with the M4SD series Gate-LOK™ suppressor interface. The Flash Comp provides a sacrificial baffle to increase the service life of your silencer. It is also pre drilled, and 2.25" length for 14.5" to 16" permanently attached, Non-SBR, M4 carbine builds. For optimal flash reduction we recommend 14.5" or longer barreled host weapons. Extreme durability, low concussion, flash and recoil reduction are the wave of the future- the Flash Comp provides an elegant solution to a complex problem. Includes shim set for mounting to suppressor. An over-travel stop is no longer included with this muzzle device because the device features an over-travel stop machined into the device itself. 

Diameter: .863"
OAL: 2.21"
Weight: 2.9 ounces
Materials: 17-4PH Stainless Steel
Finish: Black Nitride
Attachment: 1/2x28 Thread
  • Ambidextrous QD Mount
  • Free of wear prone geometry
  • Flash tines help mitigate excessive flash
  • Precisely calculated porting to neutralize muzzle movement
  • 2 Sacrificial baffles to extend the life of your suppressor
  • 17-4 PH Stainless steel to withstand hard use
  • Lustrous Black Nitride Finish
  • Griffin Laser Logo Marked
  • 1/2x28 industry standard Thread Pitch for 5.56mm carbines
  • Shim set Included
  • Over-Travel stop machined into muzzle device
  • Compatible with M4SD, M4SDK, M4SD2, 30SD, and 30SDK series silencers
5.56mm (.223)
Attachment System:
Type Of Part:
Muzzle Device
Thread Pitch:

15 Reviews

  • 5
    QD Flash Hider

    Published by Spencer on 26th Jul 2023

    Performs as advertised. Quick and easy QD mount for my 30-SDK.

  • 5
    Great Scott!

    Published by Will on 6th Jun 2023

    It's a flash hider with a sacrificial baffle for a gate-lok suppressor. Boom, done.

  • 5
    Gate-lok flash comp

    Published by Richard on 9th Jan 2023

    Beautiful I can not stress this enough it is quality the machining and finishing of the products are outstanding you can tell the people crafting these products have a passion for what they do and customer service is second too none.

  • 5
    Outstanding device

    Published by Benjamin Bauman on 21st Oct 2022

    I can’t say enough about how much I like this device. I now own three of these and one other muzzle device from Griffin to use with my 30 SD-K. They’re easy to install correctly, they come with everything you need for install, and their performance is flawless. I would absolutely recommend this whether it’s to work in conjunction with a suppressor or not.

  • 5
    Best fit with griffin blast shield

    Published by Lim K. on 11th Apr 2022

    The reason I bought this is because I have a griffin gen2 blast shield. When the gunsmith put it on , it’s fits perfectly and snuggled and the quality is excellent. Can’t wait to take it to the range. So far I’m very happy.

  • 5
    Bren 2 MS pin & weld

    Published by NRM on 25th Apr 2021

    This was the perfect replacement for the factory flash hider, made it the flattest shooting rifle I own. Also perfect for my to utilize a suppressor as well as my bayonet!

  • 5
    Great product

    Published by Unknown on 12th Apr 2021

    I put this on my 10.5 SBR and would recommend the product to anyone!

  • 5
    M4SD flashcomp

    Published by Lazaro Ojeda on 8th May 2020

    Arrived as promised. Installation was easy. Put it on my PSA AR pistol and it looks great and does an awesome job!

  • 5

    Published by Mike w on 15th Apr 2020

    The flash comp is amazing! Hands down one of the most well rounded muzzle devices I’ve ever used. Performs very good. Just don’t put it on a barrel shorter than a 14.5” unless you hate your hearing... or are running a silencer 99.5% of the time, cause this bitch is loud

  • 5
    Title of review 197

    Published by Todd Truitt on 27th Sep 2018