JMac - MDi-co

HUB Extended Blast Shield

(3 Reviews)
Current Stock:
5.00 Ounces

(B)last (D)iversion (S)hield - (37) 1.375-24 threads - (EXT)ended

Our BDS-37-EXT was co-developed with our RRD-360-24F-KM & RRD-369-26F-KM series of muzzle devices with external threads. This blast shield threads over 1.375-24 threads and diverts the blast forward, reducing side blast/concussion.

In addition to the 24F/26F-KM the BDS is also compatible with our X37 series devices an works with a wide range of suppressor adapters/mounts, see below.

Blast shield does NOT include any mounts, please select from pull down menu!

 If you plan on using with the following muzzle devices you will need the adapters


  • Overall Length: 4.0"
  • Weight: 5.5oz
  • Thread Pitch: 1.375-24
  • Material 17-4ph Stainless Steel
  • Finish: Black Nitride

Reviews (3)


Written by Corey on Apr 21st 2023

I bought this to keep on my HUB adapter when I'm not using a suppressor. Works as described. I like the texture at the end of the device as it protrudes from my handguard giving a nice grip for removal/application.

Awesome blast device

Written by Jesse Smith on Apr 4th 2023

I absolutely love Jmac products and this one was no exception. I would give it 6 stars if I could. Do yourself a favor a pimp your ak out with their stuff. You can’t go wrong.

Love the way it looks

Written by Jonathan on Dec 26th 2022

I bought this for my Riley Defense rak 47 and it fit nicely and snug without any tools. The crush washer didn't fit on the bag it said 5.56 but it wasn't needed anyways. I definitely recommend if you shoot in the prone position or live in dusty areas.

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