UTG PRO MIL 6-Position Receiver Extension Tube – AR-15/M4 (FDE)

The UTG PRO MIL 6-Position Receiver Extension Tube provides a mil-spec platform for adjustable carbine stocks on AR-15 and M4-pattern rifles. Its six-position adjustment system allows shooters to customize length of pull for different shooting positions, body armor, or multiple users, ensuring proper eye relief and cheek weld across varied shooting scenarios.

Machined from aircraft-grade aluminum with a flat dark earth finish, this extension tube features standard mil-spec dimensions for compatibility with mil-spec carbine stocks and buffer systems. The unit includes a castle nut and end plate for secure installation. The exterior has reinforced threads and properly indexed position stops for reliable lock-up at each adjustment point.

• Type: Mil-Spec Carbine Receiver Extension
• Compatible Firearms: AR-15, M4, and mil-spec AR-pattern rifles
• Material: Aircraft-Grade Aluminum
• Finish: Flat Dark Earth (FDE)
• Positions: 6-Position Adjustable
• Installation: Requires armorer's wrench; includes castle nut and end plate