

Product Description
The Armaspec Gen3 Sound Mitigation Buffer (SMB) is a single-stage, captured, drop-in replacement for a standard buffer and spring. Designed to prevent the buffer spring from rubbing the inside of the buffer tube, it helps deliver smoother cycling and noticeably quieter operation while also reducing felt recoil. This Gen3 SMB features an adjustable spring weight and is made in the USA, making it a smart upgrade for AR9/9mm builds seeking improved performance and comfort.
Product Highlights
- Captured, single-stage drop-in buffer and spring replacement for AR9/9mm platforms
- Sound-mitigation design helps stop spring-to-buffer-tube contact for smoother, quieter operation
- Helps reduce felt recoil for improved shooting comfort and control
- Adjustable spring weight to fine-tune cycling performance
- Made in the USA and includes guide rod, spring, and buffer
Specs
- Brand: Armaspec
- Product Name: Sound Mitigation Buffer (SMB)
- Generation: Gen3
- Platform/Compatibility: AR9 / 9mm
- Design: Single-stage captured assembly; drop-in replacement for standard buffer and spring
- Spring Tuning: Adjustable spring weight
- Country of Manufacture: USA
- Included Components: 1x Polymer Base Guide Rod, 1x Spring, 1x Buffer
- Manufacturer Part Number: ARM258-9
- UPC: 810048492473
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