Gate-LOK™ Hammer Comp 5.56mm 1/2x28

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The Griffin Armament Gate-LOK™ muzzle devices interface with Gate-LOK™ suppressors (M4SDK, M4SD2, 30SD, and 30SDK) as well as the QD Blast Shield.

The Gate-LOK Hammer Comp provides 2 sacrificial baffles that reduce recoil and ensure maximum service life of your suppressor. Slotted compensating features provide tuned muzzle stability. CNC machined from a solid bar of heat treated 17-4ph stainless steel, the Gate-LOK Hammer Comp is built to last.

Includes shim set and over-travel stop washer.

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

Diameter:  0.863"
OAL:  1.75"
Weight:  2.4 ounces
Materials:  17-4PH Stainless Steel
Finish:  Nitride QPQ
Attachment:  1/2x28 Thread
  • Ambidextrous QD Mount
  • Free of wear prone geometry
  • Tuned slot compensates for muzzle rise
  • 2 Sacrificial baffles to extend the life of your suppressor
  • 17-4 PH Stainless steel to withstand hard use
  • Lustrous Black Nitride QPQ finish
  • Griffin Laser Logo Marked with mini hammer for Hard users!
  • 1/2x28 industry standard Thread Pitch for 5.56mm carbines
  • Shim set Included
  • Over-Travel stop washer Included
  • Compatible with M4SD series silencers

Additional Details

5.56mm (.223)
Thread Pitch:
Attachment System:
Type Of Part:
Muzzle Device

5 Reviews

  • 5

    Published by Terrence Krogh on 12th Oct 2021


  • 5
    Hammer Comp

    Published by Jared on 22nd Apr 2019

    My favorite muzzle device. I have the hammer comp on two 11.5 inch carbines, and a 10.3 inch PDW. My M4SDII suppressor mates perfectly with the hammer comp, and the sacrificial baffles that it provides gives me extra piece of mind.

  • 5
    M4SD Hammer Comp 1/2x28

    Published by Bear State Tactical Ronald Hernandez on 4th Apr 2019

    One of the best CA compliant muzzle devices on the market. Not only does it mitigate muzzle rise, it also does that other thing CA looks down upon. Very effective, priced extremely well, same dimensions as an A2 birdcage and is a suppressor mount! You can't go wrong with anything from Griffin Armament, but with confidence.

  • 5
    Best Muzzle Device on the Market Hands down!!!!

    Published by James on 5th Sep 2018

    Keeps the muzzle completely neutral during fire, lessens the perceived recoil, isn't overly concussive, offers sacrificial baffles, rock solid suppressor host, looks awesome, super durable finish, made locally by a veteran owned company, and does a pretty good job with flash reduction. Keep up the great work Griffin!!!

  • 5
    Title of review 93

    Published by Bryan Pryce on 9th Aug 2018

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