KAK Industry AR15 9MM Carbine Buffer Extended, Heavy 10 oz

This buffer works awesome with 40 S&W, 10mm and 45ACP blowback builds. I have two and one weighs just over 11oz and one just under. I would not use anything lighter than 10oz in these builds unless I was running target velocity ammo. My loads are all factory or close to full power reloads.d This buffer has the moving weights that I prefer. Some heavy buffers are solid.

Paired this with a Strike Ind .308 Flat Spring in my .45acp Pistol AR. And it functions fine, no failures no misfeeds just a smooth running machine.

I actually ordered the 8oz. buffer but was sent the heavier, more expensive 10oz. buffer. The heavier version will probably pair up better with my set up since I had to remove the weight in my bolt carrier group to make room for the carrier extension from my Law Tactical folding stock adaptor. Not sure if they were out of stock on the other one and sent me this in its place, or if they just goofed, but I'm not upset. The quality is top notch and it arrived quickly, well packaged, and as described.

This extended heavy buffer weighs 4.9oz empty, ie... with all weights/spacers/end cap bumper/roll pin removed

I was running a competitors 9oz solid buffer and my rifle felt like a jackhammer. With the 4 sliding weights, this buffer performs more like a dead blow hammer and really smoothed things out. Mine tipped the scale at 11.4oz which is a plus in my book because I like to run some hot loads.

My 9mm AR was suffering from OOB firing and this buffer solved the issue. Excellent!

I was building a 9mm AR and since it's blowback, I wanted to keep the breech closed as long as possible. For cleanliness and power. I was worried it might be a little to heavy in combination with a Wollf Extra Power spring, but in 10.5 barrel, function was flawless, extraction was flawless.I can recommend this buffer for all AR 9mm builds, not just suppressed, no downside aside from being 5 ounces heavier to carry.

I used one in my 9mm QC10 AR15. I also used the Wolff 10%+ springs in the Glock 33rd. mags to help with operation, so far no issues. I did have some with the standard types of solid buffers. I was also having some feed issues in the .45 until I used this buffer. If you're going to put together or even have one already this is the buffer for your pistol caliber AR15. It also costs less than many out there on the market.

This is the best 9mm buffer for the 9mm AR15. If you have any problems with the BHO or anything else this will probably solve it. Especially using hotter ammo. Although if you use the Glcok mag version add the Wolff 10% springs.