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7/23/2026 8:29:12 AM EDT
This seems like not a terrible deal, as I'm sure it's great quality being made by Wilcox.  But the adjustable gas block post that sticks out over the flash hider seems absolutely dumb.  It seems like it would really limit what you could do for a can.

Arms Unlimited HK upper
7/23/2026 9:31:36 AM EDT
[#1]
Yeah, adjustable gas, but it's in the way of a suppressor so what's the point.
FAIL!
7/23/2026 10:13:22 AM EDT
[#2]
Someone here has one of the digital camo tanodized 416 rails they did and it’s amazing.
7/23/2026 12:01:17 PM EDT
[#3]
These aren't Wilcox made it seems.  I saw a pic yesterday of the box (that I can't find now) and noticed the manufacturer.

They are Kale Kalip KCR556 uppers.  There's a thread over on HKPro about them.
7/23/2026 12:18:03 PM EDT
[#4]
Quote History
Quoted:
These aren't Wilcox made it seems.  I saw a pic yesterday of the box (that I can't find now) and noticed the manufacturer.

They are Kale Kalip KCR556 uppers.  There's a thread over on HKPro about them.
View Quote



@cdholmes

...and what is the consensus on Kale Kalip made uppers?  Good to Go?

Obviously has an early hybrid "thread on rail segments on the side" forend, but honestly not having picatinny on the sides is actually nice for actually gripping the thing.

Sven
Manticore Arms
7/23/2026 12:30:52 PM EDT
[#5]
Quote History
Quoted:
These aren't Wilcox made it seems.  I saw a pic yesterday of the box (that I can't find now) and noticed the manufacturer.

They are Kale Kalip KCR556 uppers.  There's a thread over on HKPro about them.
View Quote

They are actually made by Wilcox.
7/23/2026 1:14:45 PM EDT
[#6]
Okay, here's my opinion, and just my opinion. BTW, I have a HK MR556a4 in 11" the full "pistol" as well as a spare 11" upper for future proofing it a little.

My thought is by the 11" HK upper/full rifle instead! The upper kit itself is about 2k area, which isn't terribly much from this specific upper. Yes, it has an unlined "secret sauce" barrel but so far it has been really good to me and I like it a lot.
7/23/2026 2:51:06 PM EDT
[#7]
Quote History
Quoted:



@cdholmes

...and what is the consensus on Kale Kalip made uppers?  Good to Go?

Obviously has an early hybrid "thread on rail segments on the side" forend, but honestly not having picatinny on the sides is actually nice for actually gripping the thing.

Sven
Manticore Arms
View Quote


Not sure to be honest.  Had never heard of them until I did research after seeing the tag on the box.

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