The Luth-AR BS-M4KM M4 Buttstock With Rear Sling Swivel .223 Kit is a complete adjustable carbine buttstock assembly designed for AR-15 pattern rifles chambered in .223/5.56. Featuring the classic M4 waffle-style stock with integrated rear sling swivel, this kit provides a familiar shoulder feel and secure sling attachment while using a mil-spec 6-position carbine buffer tube for reliable adjustment and fit.

This configuration includes the M4 buttstock, mil-spec six-position receiver extension, .223/5.56 carbine buffer, buffer spring, latch plate, and lock ring, giving builders everything needed to outfit a lower receiver with a dependable carbine stock system. Ideal for range use, training, and general-purpose rifle builds, it offers straightforward installation and consistent performance backed by Luth-AR’s experience in AR components.

Key Features:

• Manufacturer: Luth-AR
• Model: BS-M4KM M4 Buttstock With Rear Sling Swivel .223 Kit
• Gun Model: AR-15
• Gun Type: Rifle
• Color: Black
• Buffer Tube Type: Mil-Spec 6-Position Carbine Receiver Extension
• Included Components: M4 Waffle Buttstock, Buffer Tube, .223/5.56 Buffer, Buffer Spring, Latch Plate, Lock Ring, Rear Sling Swivel