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Greystone Defense Finishing evolved from decades of high-volume precision plating work in the automotive industry, bringing those same quality systems and production discipline to firearms manufacturing. With dedicated facilities in Rhode Island and Virginia, they're built specifically for the moder...
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Full description and what we offer
Greystone Defense Finishing evolved from decades of high-volume precision plating work in the automotive industry, bringing those same quality systems and production discipline to firearms manufacturing. With dedicated facilities in Rhode Island and Virginia, they're built specifically for the modern sporting rifle market and work with most major US gun manufacturers.
Hard coat anodizing and mil-spec plating for AR-15s, MSRs, and other modern sporting rifles. Greystone handles the critical components that define a rifle's durability and appearance—barrels, bolt carriers, receivers, handguards, gas blocks, and firing pins. They process over 1 million receivers annually and maintain multiple fully automated production lines dedicated to high-volume, consistent output.
| Primary Services | Details |
|---|---|
| Hard Chrome Lining | 5.56mm barrels in all calibers and lengths with precise chrome thickness control |
| Type III Hardcoat Anodizing | Deep black anodizing with consistent color across parts and over time; newly expanded with Greystone Defense Brown® option |
| Bolt Carrier Finishing | Chrome plating and manganese phosphate coating for maximum durability |
| Receiver Processing | AR-15/MSR receiver anodizing, laser engraving, and paint fill |
| Pistol & Shotgun Parts | Thin dense chrome on firing pins, shotgun barrel chrome lining |
| Secondary Operations | Abrasive blasting, dry film lubricants, manganese phosphate, electro-polishing |
Greystone built their firearms business intentionally, adding specialized processes based on real manufacturing demand:
"We have an established reputation for providing industry leading chrome thickness control on barrels and bolt carriers, and consistent and appealing deep black anodizing that customers want."
Predictable turnaround times for critical build schedules. Delivery and pickup service for customers within established routes. Vertical integration—many secondary operations in-house means fewer suppliers to coordinate. Defense contract experience including first article and certification requirements.
Their automotive heritage shows in quality systems, production auditing, and the ability to scale capacity when strategic partners need it. They'll reserve dedicated production capacity for customers who need reliability.
Greystone Defense Finishing (Virginia) 7992 Richmond Rd, Toano, VA 23168 📞 757-566-8070
Greystone Defense Finishing (Rhode Island/Induplate) 1 Greystone Ave, North Providence, RI 02911 📞 401-231-5770
Contact either facility directly for quotes on mil-spec finishing. They work with you to understand your specific requirements and production volumes.
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