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4.75" Long Lug MFI HK G28 DMR Style Muzzle Brake / Flash Enhancer for any weapon in .223 with 15mm X 1.0 Pitch threaded barrel. HK93 / HK33 (NOT .308)

Designed specifically to fit 12.5" HK91 Style Uppers in .308.


Limited Supply: only 3 remaining
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Sale: $75.00
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MFI HK Style G28 Muzzle Brake / Barrel Extension 4.75" Long FOR HK 93 / .223 / 5.56 calibers. Thread is 15mm X 1.0 Pitch Right Hand. (NOT .308)

This Version of the MFI HK G28 Flash Suppressor Muzzle Brake is specifically made for any number of builds that require a minimum barrel length of 16".

This one is threaded WITH a Counter Bore I.D. @ 5/8 and depth @ 0.200" to work on any German or America HK-93 style barrel.

Your OAL barrel length should end up being about 16.35".

922r Compliant: This item qualifies as a 922r compliant part if it is permanently attached to your barrel to make a 16" long BATF legal barrel. Thus counts as (1) USA MADE PART.

Unlike our other products this item is specifically for a VERY LIMITED MARKET and as such is made in very small volumes. Normal production for any other item is 1000 per year minimum. So it goes without saying we have to charge more money for these. We do our best to keep the price down for our valued customers. Support the USA and "Buy American".

  • 100% Made in the USA!
  • Designed for LIVE FIRE.
  • Threaded WITH Correct HK Mil. Spec. Counter Bore.
  • The made of Weapons Grade Steel.
  • Precision CNC machined from billet.
  • Threaded 15mm X 1.0 Pitch Right Hand
  • Maximum Length: = 120.75mm or 4.750 inches.
  • Maximum Barrel Extension: = 107.75mm or 4.250 inches.
  • Maximum I.D. @ 0.465"
  • Weight: 4.5 ounces!
  • Mil. Spec. Black Oxide to give the unit a semi matt finish.

NOTE: Even though the overall length of this item is 4.75" part of that is the threads. As you can only count the threaded area once (threads in the adapter cover the threads on the barrel) the total ADDED LENGTH to any weapons system's barrel would be about 4.25".

This item fits any weapon with a 15mm X 1.0 Pitch Right Hand threads WITHOUT ANY MODIFICATION. You do however need to remove the existing Flash Suppressor

This accessory does NOT affect the accuracy of the weapon in any way.

Muzzle Brakes are also known as: Flash Suppressor, Flash Hider, Flash Hinder & Anti Climb Device.

These are designed for LIVE FIRING.

We test all our Muzzle Brakes / Flash Suppressors to be 100% sure that they function shot after shot without any problems.

MFI uses the term "Flash Suppressor" ONLY in reference to the shape / look that our Muzzle Brakes have as they are designed to mimic the external appearance of their Military Counterparts. The fact is that all our Muzzle Brakes have ZERO Flash Suppression and little if any Anti-Climb effects during shooting. This is because we bore out the forward section with a straight through hole to allow the customer to adjust / fine tone the exact Overall Length of the weapon to achieve the best looking and 100% legal result.

The MFI Barrel Extension / Muzzle Brake does NOT reduce muzzle noise or muzzle flash in any way. So these are 100% legal for the regular civilian to own in all 50 US States.

No FFL needed, No Special License, No Permit Required & No Special Tax Stamp needed to order.


This item is NOT RESTRICTED FOR DOMESTIC US SALES in any way and we offer DOMESTIC USA shipping to ANYONE. We ship to all 50 US States as well as all US Territories i.e. Guam & Puerto Rico. Sorry we can NOT ship to ANY APO address regardless of actual location.

This item is 100% RESTRICTED FOR EXPORT OUTSIDE THE USA. The US Department of State regulates / restricts this product and it is NOT EXPORTABLE outside the USA even to LE, Governments or Military without State Department approval.

This approval is AVAILABLE through MFI as we are an ITAR / Dept. of State Registrant with the Directorate of Defense and Trade Controls Office. We can obtain a US State Dept. Export License for you.

Please feel free to contact us if you have any questions on this issue.


  • MFI
  • Available
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  • Item Requires Shipping
  • 0.3 lbs.
  • $0.69

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