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Seems to be mil spec - UTG Pro AR15 6-position Receiver Extension Tube, 6061-T6 Aluminum
by
Tom,
Verified Owner
from PA, United States
Written on September 6, 2025
Tom's Review of UTG Pro AR15 6-position Receiver Extension Tube, 6061-T6 Aluminum
Seems solid. No problems with threads in either shotgun adaptor or castle nut. Mil spec stock mates up tight and extention locks work nice. Nice deep red. Would reccomend...
Would Recommend:
Yes
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