If there is an issue with the trigger I have a 2-stage KAC that I can install as plan "B".
Did you get the tungsten buffer (tungsten granules act as an anti bounce back mechanism) and recoil spring with your upper?
If there is an issue with the trigger I have a 2-stage KAC that I can install as plan "B".
Did you get the tungsten buffer (tungsten granules act as an anti bounce back mechanism) and recoil spring with your upper?
I think the UBR is better suited for piston upper AR`s like this, the extra weight at the back helps with the overall balance of the carbine.
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The Knights Armament Triple Tap flash hider, complete with upside down logo (a collector's item no doubt!)
Can you take the handguard off for a barrel shot?
What is the diameter of the barrel under the handguard ? Any difference between the MR223 and the HK416?

When I say the UBR is heavy on the 416 I'm not just speculating. I've owned that very same setup and I found it was far too heavy for a 10 inch gun...IMHO a CQB rifle should be as light and fast as possible.
But to each, his own.![]()




























