Premium M4 Collapsible Buttstock for AR-15 – Luth-AR BS-M4KM

The Luth-AR BS-M4KM M4 Buttstock with Rear Sling Swivel is a high-quality, durable replacement stock designed specifically for AR-15 and M4-style rifles chambered in .223 Remington and 5.56 NATO. Manufactured by Luth-AR, this model offers reliable performance, smooth operation, and excellent value for builders and shooters looking to upgrade or replace their current stock.

The BS-M4KM features a classic six-position collapsible design that allows users to quickly adjust the length of pull for different shooters or shooting positions. It comes complete with a rear sling swivel already installed, making it a convenient, ready-to-use option for those who want a functional stock without purchasing additional hardware. Whether you're building a new AR-15, upgrading a budget rifle, or replacing a worn-out stock, the Luth-AR BS-M4KM delivers solid construction and practical features at an affordable price.

Key Features of the Luth-AR BS-M4KM Buttstock

• M4 Compatible: Designed to fit standard AR-15 / M4 buffer tubes and receiver extensions.
• Rear Sling Swivel Included: Integrated rear sling swivel for immediate sling attachment.
• 6-Position Adjustability: Multiple length settings for a customized fit for any shooter.
• Lightweight Polymer Construction: Reduces overall rifle weight while maintaining strength and durability.
• Textured Grip Surface: Provides a secure, non-slip grip even when wearing gloves or in wet conditions.
• .223 / 5.56 Optimized: Specifically designed for standard AR-15 platforms chambered in .223 Remington and 5.56 NATO.
• Easy Installation: Simple drop-in replacement for most M4-style buffer tubes.

Why Choose the Luth-AR BS-M4KM M4 Buttstock?

The Luth-AR BS-M4KM is a popular choice among AR-15 builders and enthusiasts who want a reliable, no-frills M4-style stock with the added convenience of an included rear sling swivel. Its collapsible design makes it ideal for home defense rifles, tactical builds, competition guns, and general-purpose AR-15s where adjustability is important.

Luth-AR has built a strong reputation for producing affordable, functional AR-15 components that perform well in real-world conditions. The BS-M4KM offers smooth movement along the buffer tube, a comfortable shoulder pad, and solid lockup in each position. The included sling swivel saves time and money during installation, making this stock an excellent value for both new builds and upgrades.

The Luth-AR BS-M4KM M4 Buttstock with Rear Sling Swivel is a practical and cost-effective upgrade for any AR-15 platform. Its combination of adjustability, included hardware, and durable construction makes it a go-to choice for shooters looking for a dependable M4-style stock that performs reliably in the field or at the range.