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Complete Guide to Magazine Couplers: For a detailed technical overview, installation guidance, and compliance information, read our complete guide here .

Complete Guide to Armory Racks: For setup tips, storage configurations, and detailed information, view the complete multi-gun guide here .

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All Armory Racks and MAG|Couplers are designed and manufactured in the USA!

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RJK Collection

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  • Walther Model 3: A Small Pocket Pistol With a Big Place in Early Walther History

    Walther Model 3: A Small Pocket Pistol With a B...

    An in-depth look at the Walther Model 3, an early and scarce pre-WWI pocket pistol. Covers historical background, production context, rarity, and identification details using original research and collector resources....

    Walther Model 3: A Small Pocket Pistol With a B...

    An in-depth look at the Walther Model 3, an early and scarce pre-WWI pocket pistol. Covers historical background, production context, rarity, and identification details using original research and collector resources....

  • A Legacy in Steel: The Story of a 1935 Mauser P.08 Luger

    A Legacy in Steel: The Story of a 1935 Mauser P...

    A detailed look at a 1935 Mauser S/42 “G-Date” P.08 Luger, serial 8134c, examined as both an individual artifact and within the broader context of early Mauser production and Russian...

    A Legacy in Steel: The Story of a 1935 Mauser P...

    A detailed look at a 1935 Mauser S/42 “G-Date” P.08 Luger, serial 8134c, examined as both an individual artifact and within the broader context of early Mauser production and Russian...

  • FFL 03 (Curio & Relic License)

    FFL 03 (Curio & Relic License)

    A practical, collector-focused overview of the Federal Firearms License Type 03 (Curio & Relic). Learn what an FFL 03 is, why collectors research it, and how state-level rules can differ—using...

    FFL 03 (Curio & Relic License)

    A practical, collector-focused overview of the Federal Firearms License Type 03 (Curio & Relic). Learn what an FFL 03 is, why collectors research it, and how state-level rules can differ—using...

  • Walther U.P. Mod. 1

    Walther U.P. Mod. 1

    A detailed look at the Walther U.P. Mod. 1, a mid‑century German Universal‑Pistole designed for 6mm blank, gas, and signal use. Explore its unique front‑loading magazine, safety features, construction, dating,...

    Walther U.P. Mod. 1

    A detailed look at the Walther U.P. Mod. 1, a mid‑century German Universal‑Pistole designed for 6mm blank, gas, and signal use. Explore its unique front‑loading magazine, safety features, construction, dating,...

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