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I'm seeing a lot on here about buffers and springs. Is it necessary to purchase a buffer and spring in addition to this brace? For a UDP-300. — 1 Answer

by Michael, from VA, United States Asked on August 1, 2022

Name Maxim Defense Industries CQB Pistol - PDW Brace for AR15, Standard Buffer/Spring (4.5)
As Low As $319.99 Save Up to 16%
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Answered by Hunter, Gear Expert, from OH, United States, on August 12, 2022

The Maxim Defense Industries CQB Pistol - PDW Brace uses a proprietary buffer, and buffer spring. It will not work with a standard buffer and buffer spring. The Maxim Defense Industries CQB Pistol - PDW Brace comes with a Maxim Defense buffer and spring.

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Last updated 2026-09-29 UTC.