Rock River Arms A4 9mm Upper Receiver US Specifications







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Rock River Arms A4 9mm Upper Receiver US Specifications

Rock River Arms A4 9mm Upper Receiver US Specifications


Rifle Upper Receivers by Rock River



Technical data & information: Sub-caliber upper assemblies allow fast and simple conversion of ars chambered in .223 to 9mm luger. True, dedicated, complete upper receivers are assembled from military specification components; includes a wilson, 1-10 twist barrel, bolt and carrier, charging handle, shell deflector, heat-shield lined handguards, sling swivel, and a1-style flash hider. Additional items not included but required for conversion to 9mm are a 9mm magazine (739-000-014); magazine adapter, action spring, and recoil buffer (080-000-442). A4 unit has flattop receiver that accepts most aftermarket accessories designed to fit a picatinny rail. Mfg: rock river arms specs: barrel, 4140 steel, blue, matte finish, 16" (40.6cm) long, .725" (18cm) o.D. Receiver, aluminum, anodized finish, matte black. Designed to fit lower receiver with .25" (6.3mm) diameter takedown pins. US specification & reliable quality rifle upper receivers by Rock River. Part Nr: 9MM0350B.

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Rifle Upper Receivers US Specifications
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Rifle Upper Receivers US Specifications
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Rifle Upper Receivers US Specifications
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Rifle Upper Receivers US Specifications
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