Purpose-built M5 buffer for .308 rifles with fixed stocks. USA-made replacement or build component designed specifically for full-length .308 platforms, not carbines or AR15s.
This is a properly engineered buffer designed for one job: reliable operation in .308 rifles equipped with fixed buttstock configurations. The distinction matters—this buffer is calibrated specifically for the .308 platform and will not function correctly in .308 carbines or standard AR15 firearms.
Buffer selection is not interchangeable across platforms. This M5 buffer is engineered for the heavier recoil impulse and spring rates of .308 rifles. Installing it in a .308 carbine or AR15 platform will result in reliability issues and potential damage.
Whether you're building a new .308 rifle or replacing a worn buffer in an existing rifle, this component delivers the performance Aero Precision is known for. Made in the USA with attention to the details that matter.