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KAK Industry 300BLK Upper Build – Running Great!

Posted on April 7th, 2014 by ar15news

KAK Industry is a company we ran across by chance and pretty much fell in love with. They make some really awesome stuff including multiple different types of buffer tubes, barrels, flash hiders, compensators, etc. and the company’s owned and operated by a great guy. These aren’t products they source out and just laser their name on either. They seriously make these right there in their shop. We love to support Americans who are making great products and KAK Industry is just that. Lately I’ve posted about some KAK parts and people have been asking who they were and what the quality was like so I wanted to write something up regarding my personal experience with their parts.

I originally approached Kurt to ask about his Fluted Pistol Buffer Tube that caught my eye in some photos. After talking a bit he asked if I was interested in checking out one of their 300BLK barrels, shoot the heck out of it and send it back when I was done. Of course I was interested so he sent me a barrel, gas tube, gas block and one of their KAK KeyMod rails. I already had a stripped upper laying around and a Smith Enterprise 7.62 Vortex flash hider. All of the parts appeared to be very well spec’d and went together with no issues. Using a Geissele Automatics REACTION ROD I was able to assemble the upper in no time.

KAK 300BLK with SanTan BAD CMC Magpul 2

KAK 300BLK with SanTan BAD CMC Magpul 2

I decided to use my San Tan Tactical STT-15 billet ambi lower with a CMC Triggers Flat 3.5lb drop-in trigger, a Battle Arms Development safety and Magpul furniture to finish off the build. I also used a set of Troy sights and as you can sort of see in the picture above the front sight has a Blitzkrieg Components Chevron FSP in it. 

One of the things I’m very careful about with 300BLK is making sure myself, or anyone else shooting my guns, can’t accidentally mistake a mag full of 5.56 for 300BLK or vice versa. That never ends well so I had my buddy Adam over at A Breon Custom make me a PMAG with the 300 BLACKOUT text on the sides and I make sure ONLY 300BLK gets put in the mag. This is especially important if you’re taking another upper or rifle with you.

KAK 300BLK with SanTan BAD CMC Magpul 2

The overall feel of this rifle is great. As with most KeyMod handguards, it’s very smooth so there’s no need for gloves really. It’s also very lightweight. The top 1913 Picatinny rail is removable so you could technically have a completely round smooth tube if you didn’t need that top rail, such as on a build with a red dot and no BUIS, etc. 

KAK 300BLK with SanTan BAD CMC Magpul 2

So far I’ve got a few hundred rounds through the rifle with no issues at all. It’s run like a champ even during our harsh Winter we’ve just come out of. With this rifle I wasn’t really going for a long distance build or anything but it has been very accurate and consistent. The 416 Stainless barrel looks as good as it shoots too.  The carbine length gas system has been perfect with no FTE/FTF’s and bolt locks back on empty mag every time. Overall…I’d have to say it’s been awesome. 

All I wanted to do with this article is to show you an upper I built using KAK parts that has been very reliable and accurate. It’s not a paid article (Just FYI, I never charge anything for articles). This was written for you guys who have asked what the quality is like and hopefully the next time you’re in the market for some new parts you’ll have another source to check out. As usual, I’ve put links to most of the items used in this article so you can get additional details and even purchase if you desire to. 

KAK Industry 16″ 300BLK 1/8 416 Stainless Barrel
KAK Industry Upper Parts (Gas Block, Gas Tube)
KAK Industry 12.5″ KeyMod Handguard
CMC Triggers 3.5lb Trigger
Smith Enterprise 7.62 Vortex Flash Hider
A Breon Custom Mag
San Tan Tactical STT-15 Grenade Lower (use code “
AR15newsLuckyCode” to save $40)

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