The big news from Heckler and Koch this year is unquestionably their suppressed keymod MR556 and MR762 rifles that are going to the civilian market. At media day they had them for us to shoot, and everyone walked away with a big simile on their face after running a few rounds through them.

The MR556/762 rifles are notable for their accuracy and reliability, and the suppressor maker OSS out of Utah has been selected by HK to produce suppressors for them. The neat thing about an OSS suppressor is that you can change out the core of the unit for caliber conversions! That means for one tax stamp you get all kinds of different calibers.

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Now for a look at how the cans attach and a peek into OSS’s baffle design:

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Photo ©right Bryan Jones

Photo ©right Bryan Jones

The official designations for the rifles are MR556A1 SD and MR762A1 SD. The suppressors pair with the rifles very well and together with the rifle they make a fine weapon system.