AR6721 Receiver Extention Nut
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Colt
Overview
The Colt AR6721 Receiver Extention Nut is a stock & brace. Compare prices from multiple merchants and find the best deal.
Specifications
Available Merchants(1)
Stock Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the Colt AR6721 Receiver Extention Nut to a build in May 2026.
Updated · from real builds on GunPartPicker
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