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ROCK RIVER ARMS A4 9MM UPPER RECEIVER

A4 9mm Upper Receiver
Brownells #
739000013
MFR #
9MM0350B
UPC
$727.99
Coupon Code
Purchase Limit Help

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Specifications
Color:
Black
Barrel Contour:
Medium
Cartridge:
9mm Luger
Receiver Style:
Complete
Finish:
Matte
Twist:
1-10
Make Model Fit:
AR-15.Universal
Restriction
Restricted Part:
Yes
Can we ship this to you? (US only)
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Description

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.


Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

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