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Questions & Answers
which would I use on a 7.5in barrel ar15 223/556? Expert Answer

I would recommend the H3.

by Ben, Gear Expert, March 5, 2021
Will these buffers/springs work with "Maxim Defense Industries PDW Brace for AR-15, Standard Buffer/Spring, 3.3 oz, FDE, MXM-47525"? Expert Answer

These Maxim Defense Industries CQB Buffer & Spring Sets will not work with the Maxim Defense Industries PDW Brace for AR-15 that uses the standard AR15 buffer assembly.

by Hunter, Gear Expert, November 11, 2022
Customer Reviews
Helpful Positive Review
Perfect for FRT by Paul, April 28, 2026
I dont have maxim defence brace but i bought this to work with similar one. It Works perfect on my SB tactical brace with my super saftey and with my Arcfire. Buffer is the exact same size so there's no problems so far after about 500+ rounds
1/1 found this helpful
Helpful Positive Review
Great quality by Norecoil1, January 22, 2020
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
3/3 found this helpful
Helpful Positive Review
Fixed my finicky 300 AR pistol by Tim, Verified Owner, February 25, 2024
300 blk AR pistol with 10.5” barrel (pistol length gas system) would not cycle subsonic without a suppressor attached. Replaced original Maxim standard buffer/spring combo with H3 buffer/spring and problem solved. The original spring was shorter and ...
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1/2 found this helpful
Most Recent Reviews
GREAT BUY FOR FRT by Mr.Him, Verified Owner, July 14, 2026
I purchased this kit for a frt upgrade. Im new and learning from various reviews and experience. It works great. The price was great and shipping. Unsuppressed.. it worked flawlessly. Suppressed.. it had a small hiccup after about 10rds. I might nee...
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Most Recent Reviews
buffer spring by Jose Serrano, Verified Owner, May 31, 2026
Worked flawless with frt trigger shipping was quick
Most Recent Reviews
great product by Kevin Lay, Verified Owner, January 27, 2026
Needed a h3 buffer for my particular build and this is supposed to do the trick. Will know more once i get all the parts to complete the build.
Read All 18 Reviews

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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 Maxim Defense Industries CQB Buffer & Spring Set

The Maxim Defense Industries CQB Buffer & Spring Set is designed for the Maxim Defense CQB Stock. The Maxim CQB Buffer & Spring Set is offered in different weights to accommodate the application. The Maxim Defense Industries CQB Buffer & Spring Standard/Carbine Set is a weighty buffer and spring set up for the Maxim CQB Stock. Designed for use with the Maxim Defense CQB Stock, the Maxim Defense Industries CQB Buffer & Spring Standard/Carbine Set is a great way to make sure you have a durable and efficient buffer and spring set up.image

Specifications for Maxim Defense Industries CQB Buffer & Spring Set:

Manufacturer: Maxim Defense Industries
Color: Silver/Blue
Fabric/Material: Tungsten
Included Accessories: Buffer and Spring
Condition: New
Country of Origin: USA

Package Contents:

  • Maxim Defense Industries CQB Buffer & Spring Set

Maxim Defense Industries CQB Buffer & Spring Set Orderable Models

List of Orderable Models

  • Maxim Defense Industries CQB Buffer & Spring - H2 - 4.5 oz., Silver/Blue, MXM-47566 , MPN: MXM-47566 , UPC: 680017475666 , Code: MDI-RBF-CQBBS-MXM-47566
  • Maxim Defense Industries CQB Buffer & Spring - H3 - 4.75 oz., Silver/Blue, MXM-47567 , MPN: MXM-47567 , UPC: 680017475673 , Code: MDI-RBF-CQBBS-MXM-47567
  • Maxim Defense Industries CQB Buffer & Spring - STD - 3.3 oz., Silver/Blue, MXM-47564 , MPN: MXM-47564 , UPC: 680017475642 , Code: MDI-RBF-CQBBS-MXM-47564
  • Maxim Defense Industries CQB Buffer & Spring - H1 - 4 oz., Silver/Blue, MXM-47565 , MPN: MXM-47565 , UPC: 680017475659 , Code: MDI-RBF-CQBBS-MXM-47565
  • Maxim Defense Industries CQB Buffer & Spring - Pistol Buffer - 7.6 oz, Silver/Blue, MXM-47569 , MPN: MXM-47569 , UPC: 680017475697 , Code: MDI-RBF-CQBBS-MXM-47569

Maxim Defense Industries CQB Buffer & Spring Set Unavailable & Discontinued Models

List of Unorderable Models

  • USED Maxim Defense Industries CQB Buffer & Spring - H1 - 4 oz., Silver/Blue, MXM-47565, EDEMO2, Condition Parts Only/Salvage, Wrong Product , MPN: MXM-47565-EDEMO2 , Code: MDI-RBF-CQBBS-MXM-47565-EDEMO-WP-F
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Last updated 2026-07-28 UTC.