KAK Industry K-SPEC Enhanced AR-15 PCC Buffer with Flatwire Spring

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KAK Industry K-SPEC Enhanced AR-15 PCC Buffer with Flatwire Spring

The K-SPEC Enhanced AR15 PCC Buffer is a cutting-edge recoil management solution specifically engineered for the AR15 Pistol Caliber Platform. Designed with the latest advancements in firearm technology, this buffer is equipped to tackle the challenges of reducing felt recoil and optimizing performance.

In recent times, there has been a surge in the application of recoil management solutions to popular pistol operating systems. Many pistols have transitioned from a single piece recoil rod assembly to a more advanced dual recoil rod spring assembly with a compression guide rod. Recognizing the benefits of this technology, KAK Industry has successfully adapted it to the AR15 Pistol Caliber Platform.

The defining feature of the K-SPEC Buffer is its unparalleled recoil reduction system. Through innovative engineering, it effectively absorbs and disperses felt recoil, resulting in minimized muzzle flip and kickback. This translates to enhanced shooting capabilities, allowing you to fire faster and more accurately by maintaining better target retention.

The design of the K-SPEC Buffer is a testament to their commitment to excellence. It comprises a two-piece reciprocating buffer body and a custom captured compression spring mechanism internally. Working in perfect harmony with the KAK flatwire buffer spring, this system ensures that the majority of the felt recoil is transferred into the buffer spring. From there, it is efficiently dispersed into the K-SPEC buffer internals, where recoil is absorbed and distributed in a more even and linear manner. This stark contrast to the abrupt recoil experienced with traditional buffer systems provides a smoother and more controlled shooting experience.


  • Reduces felt recoil
  • Enables faster follow up shots
  • Allows you to shoot faster with better accuracy
  • Length- 4″
  • Weight- 6.9 oz, 7.8 oz, 8.6 oz, and 9.5 oz
  • Finish– Phosphate
  • Bumper color- Blue, Red, Blue, and Orange
  • Extended length for proper bolt catch overtravel
  • Eliminates potential bolt bounce
  • Ships with KAK Buffer Install Tool



  • Brand: KAK Industry
  • Model: K-SPEC Enhanced AR-15 PCC Buffer with Flatwire Spring
  • MPN: 522-1702-114, 522-1702-113, 522-1702-112, and 522-1702-111
  • Buffer Weights: 6.9 oz, 7.8 oz, 8.6 oz, and 9.5 oz
  • Material: Steel and Aluminum
  • Finish: Phosphate
  • Color: Black

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Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

KAK Industry Warranty Information

Our #1 priority is your 100% satisfaction. If any product you purchase from us ever fails to 100% meet or exceed your expectation, please contact us via telephone or EMAIL and we will attempt to resolve the situation to your satisfaction. If you need to return an item, returns are accepted subject to the following guidelines:

No Returns or Refunds are allowed after 30 days from Invoice Date.

  • Shipping costs both ways are non-refundable. Orders that were shipped to you at no charge with a “Free Shipping” offer will have the cost of the original shipping deducted from the refund amount.
  • New items that have been used may not be returned unless defective.
  • Returns must include all accessories as shipped. Refunds will be adjusted for returns missing accessories, factory boxes, etc. or may be returned to the customer at the customer’s expense, at our option. If you are keeping or have lost some of the pieces, please don’t return the item.
  • Items marked Closeout or Blem, as well as Special Orders may not be returned and their sale is final.
  • Items that are Custom contract manufactured may not be returned and their sale is final unless defective
  • Returned items may be subject to a restocking fee.
  • Any damaged shipments must be reported to the carrier immediately for proper claim handling.
  • All returns must be prepaid. Insurance on returns is at your option and at your expense and risk. COD returns will NOT be accepted and the package will be returned to you.

Contact Details

Address: 2241 Celsius Ave, Unit C, Oxnard, CA 93030
Telephone: 805-981-4734
Email: sales@kakindustry.com

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 4 reviews
David Clark
Love it

Love the buffer design and how it works with the flat wire spring. I have two NFA registered SBR lowers and multiple different caliber uppers to use with them. Built a 5.5 inch barreled 9mm upper to use with Endomags. The flat wire action spring works with my 5.56, 300 BO and 9mm uppers, both suppressed and unsuppressed. All I have to change in the lower is the buffer. The nifty little plastic tool that comes with this K-Spec buffer and spring makes it easy to swap uppers/calibers at the range. I keep the tool in my pistol grip storage compartment along with the spare 2032 battery for my optic. So much fun swapping between 9mm and 300 BO on my PDW style AR lower. Everything cycles flawlessly.

Fm9 upgrade

I got this for my fm9 and it's a great upgrade over the stock buffer and spring. Definitely helps reduce recoil. Highly recommend!!

Thank you for your review! We are glad to hear that our K-SPEC Enhanced AR-15 PCC Buffer and Flatwire Spring has improved your FM9. We strive to provide high-quality products that enhance the overall performance of your firearm. Thank you for recommending us! Happy shooting!

Randy Summers

Fast delivery, excellent product.

Buffer Good, Service Meh

Buffer is nice and does reduce felt recoil. It was supposed to include the KAK buffer install tool , which I was really looking forward to using and adding to my tools but it was missing from my package and a week after sending an email to AT3 Tactical about the issue, I still haven’t gotten a response. Hopefully they’ll help.