AR15.Com Archives
 Matech vs KAC 300m???
DerMann  [Member]
9/8/2006 7:22:40 AM EST
I'm looking for a simple folding BUIS and have narrowed the field to either a Matech or a KAC 300m. I have experience with the Matech and like the design and simplicity. Can anyone tell me how the KAC 300m BUIS compares? Is it worth the extra $$$?

Thanks,
Gary
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Hoplophile  [Team Member]
9/8/2006 9:15:53 AM EST
I've never handled a matech so I can't directly compare them, but from what I've seen of it I'm not sure that simple is a word I would use to describe the design.

Now the KAC 300, -that- is a simple design. It is a very simple and lightweight design that that is small enough to work with just about any optics you might use. I would never choose it as a primary sight but it's a good backup.

I'd say that the Troy BUIS is probably the strongest flip-up on the market, but there's so many of them out these days that I couldn't say for sure.
Duffy  [Team Member]
9/8/2006 12:41:57 PM EST
Matech is not a simple BUIS. It sits higher and takes up more rails than the KAC 300M. The KAC 300M however is a simple, elegant and functional BUIS, I don't think you can find one that's lower.
Best of all, if I need a part for any of my 6 KAC 300M, I can get it. Good luck finding parts for the clunky Matech.
gs430  [Member]
9/8/2006 1:21:21 PM EST
Here my experience. I own several different BUIS including the KAC 600M, KAC 300M, Matech, Troy, ARMS, etc...

I've completely disassembled a Matech for refurbishing and it's actually quite simple. The Matech does indeed take up more space and is higher than the KAC but it's also a BDC iron sight which the KAC 300M is not. Spare parts are scarce but I believe Mongo made some replacement parts at one point...

As for which is better, well that's personal preference I guess. Having both and having used both extensively, I like the Matech's functionality better. It's BDC adjustment is pretty accurate. The KAC gets the nod for being small and low profile but that only really matters if you're mounting some optic with a huge eyepiece (like some IOR scopes) over it. My ACOG TA-01NSN on a LaRue mount clears the Matech just fine.
handyandy  [Team Member]
9/8/2006 6:59:51 PM EST
I have a Troy and a Matech and I like both. If I bought another it would be a Troy. Check it out, it's a great sight.
nf9648  [Member]
9/9/2006 11:26:38 AM EST
Only problem I have with BUIS is that they dont allow me to mount the ACOG far back enough for me to get the proper eye relief, I cant shoot with my nose on the charging handle, its uncomfortable no matter how I set the buttstock in my shoulder, just cant stand the feeling of my face touching that part of the rifle. I havent tried it yet but it looks like the KAC piece is the only one that allows me to get the proper eye relief with the scope and fire the rifle comfortably, if you have the same problem as me then KAC might be the way to go for you.
AyeGuy  [Member]
9/9/2006 12:26:00 PM EST
Hasn't KAC redesigned the 300m to make it more robust? I have heard roumers of it but not seen any for sale yet.
Hoplophile  [Team Member]
9/9/2006 12:39:51 PM EST

Originally Posted By nf9648:
Only problem I have with BUIS is that they dont allow me to mount the ACOG far back enough for me to get the proper eye relief, I cant shoot with my nose on the charging handle, its uncomfortable no matter how I set the buttstock in my shoulder, just cant stand the feeling of my face touching that part of the rifle. I havent tried it yet but it looks like the KAC piece is the only one that allows me to get the proper eye relief with the scope and fire the rifle comfortably, if you have the same problem as me then KAC might be the way to go for you.

Is the problem that the mount itself needs to come back a slot or is it that the sight is too tall and bumps into the bottom of the ACOG?

I ask because most flip-ups only use the one slot at the very rear of the receiver. I've got KAC, Troy and GG&G sitting in front of me and they all use the same amount of rail. The main difference is how tall they are when folded down.
MP5MachinenPistole  [Member]
9/9/2006 5:28:26 PM EST
I have four M4 Carbines, two have the MATECH and two have the ARMS #40L. I prefer the ARMS #40L because it is simpler, lays a little bit lower on the receiver, more durable, and it is available for purchase from commercial sources.

The MATECH is more complicated and not as readily available for sale; I had to but both of mine from private sellers on E-Bay, which makes me somewhat suspicious has to the sources of the MATECHs. I suspect persons in the Military are selling their issue MATECHs or are sourcing these MATECHs from the Military stockpiles; to which I am no too sure of the legality thereof.

Also, the price of the ARMS #40L, if you shop around, is somehat better than the MATECH, if you can find one.
nf9648  [Member]
9/10/2006 8:02:24 AM EST

Originally Posted By Hoplophile:

Originally Posted By nf9648:
Only problem I have with BUIS is that they dont allow me to mount the ACOG far back enough for me to get the proper eye relief, I cant shoot with my nose on the charging handle, its uncomfortable no matter how I set the buttstock in my shoulder, just cant stand the feeling of my face touching that part of the rifle. I havent tried it yet but it looks like the KAC piece is the only one that allows me to get the proper eye relief with the scope and fire the rifle comfortably, if you have the same problem as me then KAC might be the way to go for you.

Is the problem that the mount itself needs to come back a slot or is it that the sight is too tall and bumps into the bottom of the ACOG?

I ask because most flip-ups only use the one slot at the very rear of the receiver. I've got KAC, Troy and GG&G sitting in front of me and they all use the same amount of rail. The main difference is how tall they are when folded down.


When I have the ACOG mounted I only have one slot left at the rear, I havent tried the arms or other fold downs either but the KAC looks promising from pictures. As long as I can squeeze the two together like that I will be fine.
Hoplophile  [Team Member]
9/10/2006 8:47:23 AM EST
The KAC should be fine then. I'd also take a look at the Troy also. It also sits very low and is a more durable sight.
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