The UTG Pro TLU001-KIT Receiver Extension Kit Mil-Spec AR-15 6 Position Black Hardcoat Anodized Aluminum Rifle kit provides a complete, mil-spec buffer system upgrade for your AR-15. Built from 6061-T6 aluminum with rolled threads and a durable black hardcoat anodized finish, this kit delivers consistent performance and smooth cycling in a compact, reliable package.

This receiver extension kit includes a 6-position extension tube, carbine buffer, buffer spring, receiver end plate, and castle nut, giving builders and owners everything needed to install or refresh a carbine-length buffer assembly. Ideal for range use, training, or general-purpose AR-15 builds, it offers dependable function with a clean, straightforward design that reflects UTG Pro’s focus on practical engineering and solid value.

Key Features:

• Manufacturer: UTG Pro
• Model: TLU001-KIT Receiver Extension Kit
• Type: Buffer Assembly / Buffer Tube Package
• Firearm Fit: AR-15
• Size: Mil-Spec
• Material: 6061-T6 Aluminum
• Finish: Black Hardcoat Anodized
• Included Components: 6 Position Extension Tube, Carbine Buffer, Buffer Spring, Receiver End Plate, Castle Nut