I’m looking to purchase some KAC back-up sights. I’m having trouble deciding on the rear sight though.
I’d prefer to have the normal non-micro version for the front sight out of preference.
Is there any real difference betweeen the micro and standard 200-600m rear sights?
I’ve heard the micro is MIM, and the standard is alloy?
Durability same?
Thanks
Micro for sure. Seems like the only real difference in the lower profile windage adjustment (been a while since I’ve compared side-to-side, sold all my standard for micros). I don’t know about you but I don’t really dial windage with my rear sight, ever, on an AR.
Echo front sight. I also like the standard over the micro.
Durability I can’t see being an issue unless you have a habit of torquing your irons sideways while in the up position. I’m not even sure how you’d manage that unless you were trying. I’ve never had any issues with my KAC’s in any situation, from concrete bench to run and gun down in the dirt.
Anyone have any side by side pics of the two.
I have the side by side comp of the KAC 600M…
Based on my experience with both, I’d strongly recommend the full size. I had a micro where the windage knob would click when you flipped the sight up and down. It wasn’t consistent either. In other words, sometimes it would move two clicks when lowering the sight, but not click back when you raised the sight. See how this can be an issue? I’ve heard of others having the same issue. I sent the sight back to KAC. Their response was to send me a full-size.
micro:
full size:
My 600M Micro’s elevation adjustment stalk got loose while shooting and the peep sight portion of the stalk dropped off, never to be found again. I haven’t bought a Micro since, but I keep buying the old style 600M BUIS 
KAC sent me a replacement, but shipped via Fedex that required a signature. I couldn’t be home to sign for it, and one day left work early to come home to wait for the Fedex guy, only to find he had got here earlier than the last two times. I was furious and called and got a refund :shout:
Micro! Buying these feels like a kick in the nuts but they’re definitely worth it.
Interesting, didn’t realize there was that much difference between the two. While using the micros, I never wanted a larger knob…the smaller one worked just fine with my clumsy hands.
The older 600M BUIS housing is the same height as the 300M, but the 300M’s housing top is lower, whereas the 600M’s is taller.
The 300M’s , is great for scopes with big ocular lenses. The 600M would not fit under my US Optics SN3, the 300M (Micro and old) and Micro 600M do.
Another size comp
Very big Micro whore here…munch is right about it being like a punch to the nuts when stomaching the sticker of them new, but they are a touch above all the rest for sure in my book. The KAC micro front sight is a straight piece of art:)
Nobody except me and Belmont seem to love the Micro 300m rear.
I like the front Micro too, much easier to use than the old 
I own both but the Micro version is much nicer IMHO. The larger version isn’t necessary.
Since voting with hard earned dollars tells more about actual opinion, I’ll add my $190.02 worth…
I went with the old style 600m. The Micro is nice, but for my money I’d rather have the full size part than the Micro.
KAC designed the 300m and 600m sights right the first time around with maximum durability and functionality in mind, the Micro was an afterthought it seems.
My vote is for the full sized 600m :dance3:
ETA: This is not to imply that the Micro is inferior, or that it doesn’t work, I just like and prefer the full size.
Hey Munch, what rail is that on your gun and is a 16" bbl? Looks good.
kenken
Not Munch, but it looks like a DD M4V5 (16" bbl, 12.0 Omega X rail) to me. Other accessories include a Magpul AFG foregrip, Magpul MOE stock, Hogue pistol grip, Surefire G2X in a Gear Sector mount, and an Aimpoint Comp M or M2 in a QRP mount.
Nothing wrong with your vote at all, however your reply makes it sound as if the old KAC sights are more durable, and had more function than the new micros.
The KAC micro is no less durable, or has no less function than the full sized versions.
This is a quote straight from Coldblue…whom recently retired from KAC…
“Yes, the micro bases being stainless steel allowed us to “shrink” the bases vs the older models which were aluminum. As you can see, the rear sight leafs (300M fixed or adjustable 200-600M) are the same as the ones on the aluminum bases. Both the 600M rear micro and the front micro have NSN’s assigned by the U.S. Marine Corps.
Also greatly simplified zeroing on the front micro, i.e. no tools required for zeroing, which was one of the reasons they liked the front micro.”
Some could even make the case that the newer SS bases are more durable than the old aluminum ones, and imho the micros are indeed more durable given they are built using KAC’s latest mfg’ing processes and labor. The U.S. Marines have been running micros now for sometime with no problems whatsoever…nuff said for me:)
The good lieutenant colonel retired from KAC? :eek: 
I took a good look at the old 600M and Micro 600M, the sight stalk appears to be the same. That the Micro 600M’s sight stalk fell off was a fluke, it could have happened to the full sized, older 600M as well, so I don’t fault the Micro 600M for its rare failing.
I have several Troy front and rear sights, I always find myself wanting and buying KAC. They’re just lower profile and smaller, which I like
Point taken! It would seem I let the Red Bull do my typing for me, and you clarified what I failed to. Thanks for the information Trident!
I’ve been putting it off but I’m definitely going to have to sawp my Troys for the Micros…the Troys are so much bigger when you compare the two…
No worries brother, and I’ve certainly been known to strap on my Red Bull Wings from time to time:D
I can understand why folks who have never used KAC Micros before think or ask…“why the huge cost”…“they look fragile”…“will they hold a zero” questions since I too asked those questions in the past, but those all go away very quickly the minute you get hands on with a set.
I still own some Troys, Mbus, and LMT fixed front/rears, and they do a great job, but if I’m going all out…KAC Micros for sure:)
Fingers can definitely fly faster than fully formed thoughts :big_boss:
I’ve never doubted the durability and quality of the Micros, they seem to be the heat, I’ve just never decided to pick them over the standards. Your high praises of them have convinced me to give them a try on the next build.
Definitely agree on the LMT fixed options, they’re definitely solid, but as you say, KAC for when you mean bi’dness.