AR15 9MM Carbine Extended Buffer, 8.4 oz

This with a standard carbine spring in an Aero Carbine Enhanced tube is the solution to the ARC FireFRT Totally reliable in semi and frt. Nicely made dead-blow buffer with sliding weights. Eliminates bolt bounce. If pcc ar is your thing, keep a couple of these on the bench. KAK shipped reasonably fast

Received buffer AR-9 functions correctly. Got BCG and buffer mass up to 23.1 oz

Good quality product for a reasonable price.

I built a 9mm AR and was having a couple of minor issues, it didnt feel very smooth and feeding a couple of times. I changed out the buffer I had in it for the KAK extended 8.4 oz buffer and its been great. its cycling much smoother, no feeding issues. I wish I would have started out with this. Definitely recommend it.

I upgraded to the KAK 8.4oz buffer on my AR9 after reading some reviews from Blowback9. This combined with the KAK flat wire buffer spring made a big difference in the overall feel. A++

Works very nice in my AR9 made a world of difference with the extra weight

Received and installed in relatively reliable FM 9 that came stock with a 6.5oz steel extended buffer. Selected this to eliminate possibility of bolt bounce. Need some more time to see if this increases reliability, but high speed photo of bolt released by bolt catch show's no discernible rearward movement when loads a round into battery, which was the point. Will update if use reveals something negative or exceedingly positive.

I got the kak 9mm buffer and my 9mm ar has been running great with 500 rounds through it I have only had 2 malfunctions and they were both mag related. 5 stars!

Great product works well and has reasonable price with fast shipping.