KAK Industry AR15 9MM Carbine Buffer Extended 8 oz

I have bought two of these now, I like that they are longer then a regular buffer and you don't have to have a spacer or stack quarters in your buffer tube so the bolt catch isn.t hit so hard when it locks back. I have one in a polymer lower and it takes a little stress of the lower where the Buffer tube screws in by slowing the bolt a bit.

The best buffet for a 9mm build. Used standard carbine spring and I did not have any FTF/FTE at all. Traveled back to lock up bolt hold open latch every time. I am extremely pleased with this purchase. Took a long time researching, the 8oz extended is the way to go.

That is a great product. But 9mm ar15s can be very finicky. It didnt work well with a stern defence glock mag adapter I believe because the extractor is positioned where it doesn't have enough time to eject fully before the bolt closes. Switched to the kak 5.5 oz 9mm buffer which is 100% reliable for my build.

Was in the process of building an ar9, and could not decide what buffer I needed, I tried using the standard ar buffer weight and it felt like it was going to launch it though the buffer tube and into my shoulder. A friend recommended I look at this one so I picked it up and could not be happier with it's performance.

Hi there. I recently built an AR in .45acp. I used this 8oz. Buffer and it cycles so smoothly.

Glad buffer is of a different color, makes it easy too tell it apart from my 5.56 buffers

Have not tested this yet, but from the looks of their buffer it seems well constructed and the finish is superb. Will give a more thorough review once I make a trip to the range.

I recently bought a 10.5" 9mm upper from PSA to use on my registered SBR lower. The upper came with a KAK flash can so that lead me to find the KAK website. Since I needed a mag well adapter too I decided to try out the KAK adapter. It looked like a very well thought out design and at about half the price of one of the more popular brand adapters. (I left a good review on the adapter too). While looking at the adapter I saw the 9mm extended carbine buffer recommended as something others bought with the mag well adapter. I did some research on extended pistol caliber buffers and the need for heavier buffers on pistol caliber ARs. Since I was using a JP silent buffer in my SBR lower with my 5.56 and 300BLK uppers I knew it would not be compatible with the 9mm bolt so I needed a different buffer for the 9mm upper. Everything I read said the extended heavy carbine buffers were the way to go to minimize damage to your both catch if using a 9mm set up to hold open after the last round. Since I was getting the mag well adapter and the price on this buffer was very good compared to other similar types I went ahead and ordered it. Very glad I did, it works perfectly. This will make a great addition to your 9mm AR build. I didn't even know they were a thing before KAK.

Its a great buffer. Great weight and length and keeps the 9mm functioning properly.