AR15 6-position Receiver Extension Tube Kit, Mil-spec, Black | UTG PRO®

• Proudly Designed and Made in USA
• 6 Position, Mil-spec Diameter, And Compatible with Carbine Buffers and Springs
• CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Reliable Thread Engagement with Lower Receiver
• Tight Tolerances for a Secure Fit and Function with Various Collapsible Mil-spec Stocks
• Matte Black Type III Class II Hard Coat Anodized
• Includes Carbine Buffer, Buffer Spring, Receiver End Plate, and Castle Nut

ACCESSORIES INCLUDED

• Castle Nut
• Receiver End Plate
• Carbine Buffer
• Buffer Spring

Parts included: Buffer Spring, Carbine Buffer, Castle Nut, Receiver End Plate