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Questions & Answers
Will this model operate with a CMMG Banshee 9mm pistol? Expert Answer

Yes, it should.

by Jonathan D., Gear Expert, March 18, 2020
Refereed here from another KynSHOT buffer. Will this one apply to my 45acp 3” pistol carbine? Expert Answer

Please email us at techsales@opticsplanet.com so we can get more information to help you.

by Hunter, Gear Expert, October 20, 2022
Customer Reviews
Helpful Positive Review
9mm pcc GRS by Gordon Cole, Verified Owner, September 20, 2025
I purchased this hydraulic buffer with 2- 3/4" 2.5 oz weights and a jrc 8.5" buffer tube and let me tell you my AR9 recoil was reduced significantly.. I would highly recommend this buffer and system set up.
1/2 found this helpful
Helpful Positive Review
Great Buffer for AR 9mm by Tai, Verified Owner, October 16, 2019
I've always known that 9mm ARs will recoil pretty hard, however, using this buffer with a JP .308 spring, the recoil was definitely softer than an M4 Carbine. That's a win if you ask me. Definitely helps to create a reliable 9mm AR with out any cycli...
Read More...
7/10 found this helpful
Helpful Positive Review
Kynshot 9MM hydraulic buffer by Red89notch, November 21, 2019
This buffer is fantastic. I felt an immediate decrease in recoil and the gun was far more controllable when combined with Tubb flatwire spring in an A5 length tube. Designed for 9mm but works very well for 5.56 too.
5/8 found this helpful
Helpful Positive Review
I use this hydraulic buffer with a JP .308 buffer spring and A5 buffer tube in my competition PCC. Using the JP 9mm short stroke BCG makes the gun cycle fast and minimizes recoil. I am surprised at how the gun runs with these components. Some top sho...
Read More...
3/5 found this helpful
Helpful Positive Review
It Works... by Ab, Verified Owner, February 23, 2024
My AR9 was doubling a little bit and I experienced an OBD due to bolt bounce several years ago. This prompted me to look for ways to mitigate these issues. After combing the internet and the forums I came across many AR9 owners. One specifically by t...
Read More...
4/5 found this helpful
Helpful Positive Review
Works perfect for my PCC by TswissT, Verified Owner, August 26, 2024
Just installed this in my S&W Response... I have been to the range a few times since install and have put about 1500 rounds without any issues... I cannot say there is a noticeable decrease in felt recoil, because there wasn't much to begin with. But...
Read More...
1/2 found this helpful
Read All 17 Reviews
Color:
Silver
Finish:
Stainless
Gun Make:
AR Platform
Gun Model:
AR-9
Diameter:
0.76 in
Length:
3.9 in
Weight:
6 oz
Condition:
New

Code: 3P7-RBF-BCNN9-RB5015HD

MPN: RB5015HD

UPC: 854476005171

List: $169.99Save $5.00
$164.99
Purchase Restrictions Purchase Restrictions

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Blitzkrieg Components AR 9mm Heavy Damped Buffer

Our Heavy Damped (HD) PCC Buffer Model has stiffer hydraulic dampening and stronger return spring for high stress applications. For Pistol Caliber Carbine builds that need increased shock absorption. Can be used in typical PCC carbine builds as well as short-stroke systems, and for hotter ammo. This HD model is not recommended for short barreled builds since they do not run the bolt as hard and will get more effect from the standard model. This buffer model was developed to fill the need for stiffer shock absorption which is needed on some PCC guns. If you plan to run your gun in a short stroke manner, then we recommend this buffer with our PCC buffer weight which will add mass while shortening the stroke. Many shooters feel that this buffer with the PCC buffer weight is the softest running even with a full stroke 16" carbine.image

Blitzkrieg Components partnered with KynSHOT to develop a top-of-the-line 9mm specific AR-15 buffer using KynShot's Hydraulic Buffer Technology. The Hydraulic Buffer body uses hydraulic shock absorption to dampen the impact of the bolt at the rear of its travel and also to dampen the forward impact of the Buffer's weight as it chambers the next round. It's weight and length have been optimized for the 9mm application so that it runs reliably, softens recoil, smooths out the action, and stops just behind the bolt catch using any 9mm Parabellum (9x19mm) ammo type. It provides the softest recoil impulse of any 9mm buffer we know of and will allow very fast follow up shots, improved accuracy and less wear on the firearm. The hydraulic fluid and seals are made to meet mil-spec requirements and have an ambient temperature operating range of -30F to +150F.

The blowback operation of a PCC AR-15 drives a very heavy bolt much harder than a standard AR-15 BCG and it needs to be dampened as much as possible to optimize the system, reduce wear on the firearm and reduce recoil and sight movement. For this reason, the buffer is a very important component in getting a AR-15 PCC to run at its full potential. The design is simple, yet very effective and will feel softer and run quieter than any conventional AR buffer. Spring noise is also dramatically reduced using this buffer. The length of our buffer stops the bolt just behind the bolt catch on a 9mm AR-15 without the need for a spacer.

Buffer Spring selection is very important to optimal performance and minimal recoil and sight movement. While the 5015HD buffer has increased resistance compared to the 5007 buffer, it will need similar spring strength to get optimal performance unless additional weight is added using our PCC buffer weight. If using the buffer weight, then spring strength can often be reduced. Trial and error is often needed.

Spring Selection Guidance:

The following is provided as general guidance as a starting point in spring selection on 9mm carbines:

JP 308 Rifle Spring - 14.5" & 16" barrel without PCC buffer weight

JP 308 Carbine Spring or SPRINCO Orange Spring - 14.5" & 16" barrel with PCC buffer weight

Using with PCC Buffer Weight:

Our PCC buffer weight can be used with this buffer to add more mass in front of the buffer. This often softens the action even further and can also allow you to step down one level in spring strength from a .308 rifle to a .308 carbine spring in a typical 16" carbine.

Bolt Weight:

If your bolt has a weight in it, we recommend keeping the weight in the bolt. Removing the weight to get a lighter bolt is not recommended for blowback guns even with light competition loads.

Improvements:

Over the last several years our buffers have been run hard by thousands of shooters in just about every conceivable type of build and in intense PCC competition. We have had great feedback from our customers which has resulted in several rounds of product improvements in 2018 to achieve maximum effectiveness and service life. Our goal is the most effective buffer and the most durable. The buffers we are now shipping have all the latest improvements.

WARNING: California`s Proposition 65

Specifications for Blitzkrieg Components AR 9mm Heavy Damped Buffer:

Manufacturer: Blitzkrieg Components
Color: Silver
Finish: Stainless
Fabric/Material: 17-4 Stainless Steel
Gun Make: AR Platform
Gun Model: AR-9
Diameter: 0.76 in
Length: 3.9 in
Weight: 6 oz
Condition: New
Gas System Type: Blowback
Country of Origin: USA
Gun Type: Rifle

Features of Blitzkrieg Components AR 9mm Heavy Damped Buffer

  • Reduced Recoil: Hydraulic buffers significantly decrease felt recoil, improving shooting comfort and accuracy.
  • Enhanced Durability: Built with high-quality materials, these buffers ensure long-lasting performance and reliability.
  • Faster Follow-up Shots: By reducing recoil and improving cycling, shooters experience quicker and more precise follow-up shots.
  • Compatible Design: Designed for compatibility with popular pistol caliber carbines, these buffers are versatile and easy to install.
  • Increased Hydraulic Resistance and Heavier Return Spring
  • Mil-Spec rated hydraulic fluid and seals can operate in ambient temp of -30F to +150F
  • Super Smooth Running
  • Faster follow up shots
  • Quiet Buffer Operation
  • Reduced Spring Noise

Package Contents:

  • Blitzkrieg Components AR 9mm Heavy Damped Buffer

Blitzkrieg Components AR 9mm Heavy Damped Buffer Orderable Models

List of Orderable Models

  • Blitzkrieg Components 9mm Hydraulic Buffer High Damped, 4in, Stainless Steel, RB5015HD , MPN: RB5015HD , UPC: 854476005171 , Code: 3P7-RBF-BCNN9-RB5015HD
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