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Posted: 2/9/2021 7:35:11 PM EDT
I just picked up a Geissele Mk 4 Mlok: https://geissele.com/super-modular-rail-mk4-m-lokr.html

Fit and finish are superb.  Price was OK.  I like it a lot.

It seems like this rail has a bad rep whereas I would put the built-in rails where they are anyway so it is perfect for my application.  

Is this all about staying from the original design concept (newer is not necessarily better), weight or just people not wanting the built in rails because it kinda defeats the purpose of M-lok (bolt direct so who needs a rail) or for looks or whatever?

Just curious really on what I might be missing?
Link Posted: 2/9/2021 8:07:54 PM EDT
[#1]
SLR perfected that design some years back. Picatinny Rails are best rails.
Link Posted: 2/9/2021 8:15:20 PM EDT
[#2]
I love the look and design of the MK4 rail so much I bought two!
The KAC URX 3.1 rails are nice too but really expensive for what they are.
Link Posted: 2/9/2021 9:36:28 PM EDT
[#3]
Hybrid mlok/quad rails are the real sweet spot in my opinion. I like both the Mk4 and the CMT one too.
Link Posted: 2/10/2021 10:13:22 PM EDT
[#4]
It is my favorite rail.
Link Posted: 2/10/2021 11:56:50 PM EDT
[#5]
OK so I have the choir.   I thought there would be more nay-sayers but maybe not.  Carry on then.
Link Posted: 2/11/2021 1:44:03 AM EDT
[#6]
I miss the old Geissele.
Link Posted: 2/11/2021 10:35:06 AM EDT
[#7]
The MK4 and MK8 are their best rails.  

Link Posted: 2/12/2021 9:57:23 PM EDT
[#8]
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Quoted:
I miss the old Geissele.
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There we go!  I want IWI to be IMI and make the Galil AR 16" too -  sorry couldn't resist!
Link Posted: 2/12/2021 10:13:16 PM EDT
[#9]
Link Posted: 2/13/2021 6:22:46 PM EDT
[#10]
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Quoted:
The MK4 and MK8 are their best rails.  

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Don’t forget the MK7!

Snagged one to put in my SPR. Bombproof !  Not very economical though...

Agree about the MK8. Stout! and the ridges help with a better grip. I absolutely love the way a flashlight will mount sunken between the ridges. Another plus is longer barrel nuts than the mk14/16
Link Posted: 2/14/2021 12:07:42 PM EDT
[#11]
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Quoted:

I agree.  Wish they have an 11-11.5" version for 12.5" builds.
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Quoted:
Quoted:
The MK4 and MK8 are their best rails.  


I agree.  Wish they have an 11-11.5" version for 12.5" builds.


Agreed on all counts
Link Posted: 2/14/2021 12:14:13 PM EDT
[#12]
You're very late the party, the mk4 and mk8 rails are my favorites
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