Leapers/UTG UTG PRO Mil-spec 6-position Extension Tube, Svart
6-position Mil-spec Diameter Receiver Extension Tube for AR15 Rifles Extension Tube CNC Machined from 6061-T6 Aircraft Grade Aluminum with Precisely Rolled Threads for Durable Thread Engagement with Lower Receiver Underwent the Tightest Tolerance Controls for a Secure Fit and Function with Various Collapsible
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