JMac - MDi-co

GFHC 28S KeyMount (KeyMicro)

(3 Reviews)
Current Stock:
4.51 Ounces
Shim Kit
Pin for Pin/Weld
Out of stock

(G)36(F)lash(H)ider(C)ompensator(28)1/2-28 thread pitch(S)houlderMount(KM)KeyMount

In order to use this device with a suppressor, it must be installed by a professional - to ensure it is properly mounted and aligned. Do NOT shoot without checking alignment with bore rods. JMac Customs is not responsible for any damage to the suppressor, or any injury resulting from improper installation. Some firearms are NOT suitable suppressor hosts, just because you can thread this muzzle device on, does NOT mean it is safe to use.

The GFHC is a combination of the German G36 flash hider and DeadAir Silencers KeyMount

THis is the compensator version that has to be timed in order to reduce muzzle rise


  • 1/2-28 Threads
  • KeyMo & KeyMicro Suppressor compatible
  • 10mm Bore
  • 2.7" Long
  • 17-4ph Stainless Steel
  • Black Nitride


JMac Customs recommends that all suppressor mounts be installed and checked for alignment by a certified professional. Serious damage could result to your suppressor/firearm and physical harm is possible if installed/used incorrectly. All suppressor mounts MUST be tight against the shoulder or face of the barrel, using shims or face-milling method. Contact us if you have any questions or need a recommendation for professional installation. JMac Customs LLC is not liable for injury, damage, or death related to the usage of this product.


Reviews (3)

Dead air

Written by Charles D Wolfe on Nov 29th 2021

Great fit and finish


Written by Spencer Walker on Nov 26th 2021

Once again, Jmac hits it out of the park! Great fit and finish, all my DA cans fit and lock beautifully!

GFHC 28S KeyMount

Written by Clay on Oct 11th 2021

An absolute must-have upgrade from the A2 flash hider. Looks sick, is functional and grants the ability to mount a suppressor. It is a little heavier than the A2 but definitely worth it.

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