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Home Rifle Parts Receiver Parts Receivers Upper Receivers ROCK RIVER ARMS A4 9MM UPPER RECEIVER

ROCK RIVER ARMS
A4 9MM UPPER RECEIVER

(2)
739000013
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.

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.

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875.2 875.2 1 GBP
Product no.: 739000013
ROCK RIVER ARMS A4 9MM UPPER RECEIVER
Mfr Part: 9MM0350B 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.
875.2 GBP 0 £875.20 *
Is a 'Call to order' product.
Not available.
Specs: Cartridge: 9 mm Luger Color: Black Finish: Anodized Make: AR-15 Twist: 1-10
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Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Rock River Arms A4 9mm Upper Receiver allows easy conversion of ARs chambered in .223 to 9mm Luger.
  2. It is a complete upper receiver with military specification components, including a Wilson 1-10 twist barrel and a flattop receiver for Picatinny rail accessories.
  3. Conversion to 9mm also requires a 9mm magazine, magazine adapter, action spring, and recoil buffer, which are not included.

Attributes

Cartridge: 9 mm Luger Colour: Black Finish: Anodized Make: AR-15 Twist: 1-10 Delivery weight: 1.86kg

Item details

Made in USA
US export classification: I(g)



🔥 Upgrade your AR-15 with Rock River Arms A4 9mm Upper Receiver! Precision-crafted for 9mm conversion, featuring a 1-10 twist barrel. Shop now for top-notch 🔫 accessories! 🎯

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.

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.

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