K-SPEC Enhanced AR15 PCC 9.5 oz Buffer

Just got done running the first 100 rounds through my FM9 PCC. Upon receipt I installed the K-Spec and spring only to discover that the bolt could no longer be locked back. The folks at KAK suggested there was probably a spacer in the buffer tube that came with the PCC. Wasted a weekend trying to get it out and ended up just buying and installing a Tapco Carbine Buffer tube. Voila! It worked again. I had expected an incremental decrease in felt recoil and, due to flat spring, possibly a similar or slightly larger decrease in perceived recoil. Gotta say, I was surprised by the decrease in both. The spring makes it quieter by, to my admittedly noobish perceptions, a significant margin and the pcc had a much easier recoil impulse and faster return to target with the heavier buffer. Extremely pleased with this so far. Thanks Reid

I use this buffer with a suppressor and 8.3" barrel. I was using a 7.5 Oz KVP buffer that had a pretty sharp recoil impulse. I don't think the 7.5oz alone is enough for a supressed 9mm blowback. It slammed really hard against back of tube. This Kspec 9.5oz made a pretty big improvement. Not only taming the felt recoil and sharp impulse, but it's also quieter! It feels better when hitting back of tube, and gun stays flatter. If doing it again I would just buy this one from the start. Great improvement over solid buffers. Esp if u run anything 7.5oz or below, this will help A LOT!

Purchased the K-Spec Enhanced AR PCC 9.5 Oz Buffer and Flatwire spring after seeing Blowback9 on YouTube. I know that he has a hydraulic solution, but I did not want to change out the buffer tube and this solution is less expensive. The K-Spec Enhanced AR PCC 9.5 Oz Buffer and Flatwire spring made a great improvement in the recoil felt (less recoil). I would recommend this to anyone looking to mitigate the recoil on the PCC 9mm. I was so impressed that I ordered a second one for my other PCC.

Bought for a new 9mm colt style build and couldn't be happier with the results, worked perfectly in the setup.

I am new to the AR type rifles. I bought an AR-9mm due to the ammo prices and also thought that the recoil was going to be much less that a regular AR-15. However, the recoil was quite noticeable. I went online (YouTube) and found several products to mitigate recoil, but this one stood out to me. I ordered it. No issue install, (16" barrel AR-9) especially with the included tool. Went to the range and was amazed at the difference. Much smoother cycling and less felt recoil. The PCC 9.5 Buffer and Flat-Wire Spring made a noticeable difference.

Stellar product. Spring is a little picky going into the buffer tube but is incredibly quiet. Dropped mine into a 16 inch 6951 style build with an M4 stock and the recoil even with 115gr is super smooth. For the price you would pay vs a standard buffer and spring assembly this is waaay better. Top notch product.

I was skeptical of this buffer after seeing a review online, but gave it a chance. Put it in my New Frontier Armory MP-5 mag compatible AR-9. It is the softest shooting AR-9 I've ever shot - out of 8. Not as soft and smooth as a roller-delayed blowback like MP-5, but not all that far off and better than expected. Very pleased, and will use these buffers in any future AR-9 build.

Great product! Before installing this I took my AR9 to the range to note the recoil impulse and had my wife and a friend try it as well. Installed the K-Spec and went back a couple of weeks later and we all shot it again. The difference was extremely noticable to all three of us. We were all able to stay on target better with much softer recoil. No issues cycling over 200 rounds of Blazer Brass. Set up was a Ballistic Advantage 5.5" barrel, Jacob Grey BCG, Spikes Tactical upper receiver and Kak K-Spec 9.5oz buffer kit with flat wire spring. I was previously using the Aero Precision EPC buffer kit.

I used this in an 8.5" AR-9 pistol and it works great! Felt recoil is reduced , it ejects cleanly and cycles fine.