Luth-AR BS-M4 is a polymer M4-pattern buttstock for AR-15 and M4-style carbines, offering standard 6-position adjustment on a mil-spec carbine receiver extension. Built with a rear sling swivel for convenient sling attachment, it’s a straightforward upgrade for comfort, fit, and everyday handling.
Key Features
6-position adjustable fit for improved ergonomics
Polymer buttstock construction for durable, lightweight use
Rear sling swivel included for quick sling integration
Designed for AR-15 / M4 carbines using a mil-spec carbine receiver extension
Upgrade your carbine’s shoulder support and sling-ready setup with the Luth-AR BS-M4 buttstock.
