Armaspec SMB Buffer Kit Gen 3 - Advanced Recoil Management System for AR-15 Platforms
Armaspec
The Armaspec A5 Spacer is a precision buffer system component designed to work with A5-style stocks and either the Armaspec Stealth Recoil Spring (SRS) or Sound Mitigation Buffer (SMB). If you're tuning your AR platform's recoil impulse or fine-tuning your buffer setup for reliability and shot-to-shot consistency, this spacer lets you dial in the exact geometry your rifle needs without swapping major components.
An A5 spacer serves as a critical tuning element in your buffer tube assembly. Whether you're running a heavier buffer weight, working with a suppressor, or simply need to adjust how your bolt carrier group cycles, this piece lets you adjust the spring preload and overall system geometry with precision. It's the kind of detail-oriented upgrade that serious shooters and builders use when factory setups don't quite match their ammunition, barrel profile, or intended use.
Armaspec's A5 spacer is built to tight tolerances and designed specifically for A5 style stocks. At 0.75 inches in length, it's engineered to integrate seamlessly into your recoil mitigation setup, whether you're working with the SRS or SMB. This is a critical tuning tool for anyone building a rifle that needs to run soft, run quiet, or run exactly the way they want it to.
| Brand | Armaspec |
| Product Type | A5 Spacer / Buffer System Component |
| Length | 0.75 inches |
| Compatibility | A5-style stocks; Stealth Recoil Spring (SRS) or Sound Mitigation Buffer (SMB) |
This spacer is designed for A5-style stocks. It works with the Armaspec Stealth Recoil Spring or Sound Mitigation Buffer systems. Verify your stock model before ordering if you're not certain of your setup.
The A5 spacer adjusts the geometry of your buffer tube assembly, which fine-tunes how your bolt carrier group cycles and how recoil is managed. It's used to dial in your system when working with specific buffer weights, ammunition, or barrel configurations.
This spacer is designed specifically for A5-style buffer tube assemblies. It is not compatible with standard commercial or milspec tubes.