Out of stock

Want to be notified when this product is back in stock?

Add to WishlistAdd to Compare
Genuine HAUS 11″ MR223 replacement barrel.
These barrels are cold hammer forged with a 1/7 twist, have a hard chrome-plated bore and chamber and feature the correct HK style barrel extension including HK style feed ramps and extractor support pin. These barrels have been tested and proven to function correctly suppressed and unsuppressed with Waffen Burk long lever adjustable gas blocks as well as the 10″ genuine HK vented gas blocks.
Caliber: 5.56
Twist: 1-7″
Contour: Light
Length: 11″
Weight:Weight: 20.71oz or 1lb 4.71oz
Finish: Diamond-like carbon
Compatibility – MR223 upper receivers, HK416 A5 upper receivers and HAUS A5 upper receivers.
More about Diamond-like carbon:
  • When used with a genuine HK recoil buffer, spring and Waffen Burk adjustable gas block, we have found the N+ position is the correct setting for unsuppressed use and the N position is correct for suppressed use, with these settings operation is smooth and felt recoil is light.
  • When we were building our test uppers two out of three of the Waffen Burk gas blocks that we installed on our test barrels required some filing on the sides of the alignment tab on the gas blocks as they were just a bit too wide for the notch on the barrel. Genuine HK gas blocks slide right on and do not require any hand fitting / filing.
🇺🇸 Made in USA.
  • These barrels are no longer available for backorder, estimated back in stock date is April 15th.
  • If you’re unsure what barrel extension is correct for your project compare your receiver to the receivers in the photo above, if you’re still not sure please feel free to give me a call at 512-650-9673, I’ll be happy to answer any questions you might have.

Link to A5 barrel nut:

All NFA Regulations apply.  Please check your local and state laws before ordering. Contact your local ATF Field Office with any NFA questions you may have.

Weight 5 lbs