The CMC AR-15 8-Position Buffer Kit in A5 length gives you the tuning flexibility that serious AR builders demand. This complete buffer tube assembly lets you dial in your recoil impulse and spring tension across eight positions, making it ideal whether you're running suppressed, unsuppressed, heavy BCGs, or light ones. CMC manufactures the entire kit in-house on CNC machinery, which means tighter tolerances and consistent quality you can count on—no outsourced components, no assembly shortcuts.

Built from 6061-T6 aluminum with hard anodized finish per MIL-A-8625 Type III Class 2 spec, this buffer tube handles real-world use. The design includes drainage holes engineered for marine environments, so saltwater and wet conditions won't trap moisture inside your stock assembly. You get the mil-spec A5-length tube, a 3.8 oz recoil spring, mil-spec buffer, castle nut, and quick-detach receiver end plate—everything needed for a complete installation on most AR-pattern rifles.

A5 buffer tubes offer slightly more length than standard carbine tubes, which can help with stock comfort and sight radius on shorter uppers. If you're building a precision rifle, a plinker, or refreshing an older build, the extra adjustment positions let you find the sweet spot between reliability and felt recoil. CMC stands behind its work with a lifetime warranty and 100% satisfaction guarantee, so you're covered.

The CMC AR-15 8-Position Buffer Kit in A5 length gives you the tuning flexibility that serious AR builders demand. This complete buffer tube assembly lets you dial in your recoil impulse and spring tension across eight positions, making it ideal whether you're running suppressed, unsuppressed, heavy BCGs, or light ones. CMC manufactures the entire kit in-house on CNC machinery, which means tighter tolerances and consistent quality you can count on—no outsourced components, no assembly shortcuts.

Built from 6061-T6 aluminum with hard anodized finish per MIL-A-8625 Type III Class 2 spec, this buffer tube handles real-world use. The design includes drainage holes engineered for marine environments, so saltwater and wet conditions won't trap moisture inside your stock assembly. You get the mil-spec A5-length tube, a 3.8 oz recoil spring, mil-spec buffer, castle nut, and quick-detach receiver end plate—everything needed for a complete installation on most AR-pattern rifles.

A5 buffer tubes offer slightly more length than standard carbine tubes, which can help with stock comfort and sight radius on shorter uppers. If you're building a precision rifle, a plinker, or refreshing an older build, the extra adjustment positions let you find the sweet spot between reliability and felt recoil. CMC stands behind its work with a lifetime warranty and 100% satisfaction guarantee, so you're covered.