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Maxim Defense Industries CQB Buffer & Spring Set
As Low As $51.99 Save Up to 21%
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Most Helpful Positive Review Great quality
The pistol buffer and spring combo was just the thing my PCC needed to function correctly. With the previous buffer the bolt was traveling to fast and was causing the bolt catch to break. I was shooting 147 grn 9mm
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cqb buffer

by kristoph walt, Verified Owner from OH, United States Written on January 13, 2026
It’s works good runs and feels great fits the ccs brace
Would recommend: Yes
Was it helpful to you? Yes | No

great product

by Justin Santos, Verified Owner from GU, United States Written on December 25, 2025
Works just as expected great product and great service
Would recommend: Yes
Was it helpful to you? Yes | No

bufferand spring

by Elvio Pena, Verified Owner from IL, United States Written on December 16, 2025
Install on my ar work great. I need small buffer thi did the job
Pros:
  • None
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

just as advertised

by John, Verified Owner from IN, United States Written on January 28, 2025
Looks sweet, allows my bracelet to collapse farther in making my pistol shorter overall.
Would recommend: Yes
Was it helpful to you? Yes | No

Fixed my Grendel

by Mark Amodio, Verified Owner from KY, United States Written on January 14, 2025
Was having issues getting my 6.5 Grendel to cycle properly and constantly. 20" barrel and rifle lenght gas system. Tied an adjustable gas block, but it wasn't a gas issue. Ended up being a spring/buffer issue. Tried a number of spring and buffer weight configurations and wouldn't run 100% of the time. Came across the Maxim products on Optics Planet, and I'm glad i did. I'm now running 100% with zero cycling or ejection issues. Quality is excellent on the Maxim products.
Would recommend: Yes
Was it helpful to you? Yes | No

Maxim defense cqb buffer and spring set

by J, Verified Owner from NY, United States Written on November 15, 2024
The Maxim defense CQB buffer and spring set works great. Rifle cycles perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No

maxim defense

by DH, Verified Owner from FL, United States Written on September 1, 2024
Maxim for the win. Purchased to replace the carbine buffer worked as should and cycled perfectly
Would recommend: Yes
Was it helpful to you? Yes | No

Buttery Smooth dead blow buffer for a compact ar9

by Brent, Verified Owner from AL, United States Written on August 10, 2024
This was installed on an ar15 lower converted to an ar9. This little compact buffer is for use in the shorter maxim pdw tube. It provides just enough weight and length for a compact, smooth shooting ar9 conversion. The spring is buttery smooth and quiet, meeting the expectations you would have when sinking a bit more money into your system. In other words, it makes it "feel" like the extra money you are spending, verses a generic buffer system. There is ONE caveat. This system will NOT work if you attempt to use it on a freedom ordinance 9mm. First, the brace/stock system cannot be used becuae of the FX9 width. Second, the FX9 BCG is shorter and the length of the 9mm buffer will not allow the BCG to come back far enough to load the next round.
Pros:
  • Perfect Fit
  • well made
  • Smooth
Cons:
  • More expensive
  • limited to using compact PDW tube
Best Used for:
  • AR9 buffer systems
Would recommend: Yes
Was it helpful to you? Yes | No

Quality products with performance to match

by Pat B, Verified Owner from MS, United States Written on March 16, 2024
I have several Maxim Defensive stocks and braces. Maxim offers you the tools to fine tune the performance and reliability of your AR-type carbine, pistol, or SBR. It works!
Would recommend: Yes
Was it helpful to you? Yes | No

Maxim Defense buffer and spring

by Jeff S, from PA, United States Written on March 13, 2024
Great product. Fit and functions perfectly. Also great service from Optics Planet!
Would recommend: Yes
Was it helpful to you? Yes | No
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