Rock River Arms Completed Pistol Upper Receiver, A4 .223/5.56mm, 10.5 Inch Barrel, 1-7 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hide, Black, AR0366B
Rock River Arms Completed Pistol Upper Receiver, A4 .223/5.56mm, 10.5 Inch Barrel, 1-7 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hide, Black, AR0366B
Description
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Rock River Arms AR0365B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 7 Inch Barrel, 1-9 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hide, Black
Rock River Arms AR0388B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 16 Inch Barrel, Mid-Length Profile, 1-9 Twist, 1/2-28 Thread, A2 Flash Hider w/Gas Block, Black
Rock River Arms AR0450B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 20 Inch Barrel, Standart Profile, 1-9 Twist, 1/2-28 Thread, A2 Handguard, A2 Flash Hider w/Gas Block, Black
Rock River Arms AR0366B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 10.5 Inch Barrel, 1-7 Twist, 1/2-28 Thread, Free-Float Handguard, A2 Flash Hide, Black
Rock River Arms AR0375B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 16 Inch Barrel, Mid-Length Profile, 1-9 Twist, 1/2-28 Thread, A2 Flash Hider, Black
Rock River Arms AR0364B: Completed Upper Receiver, A4 .223/5.56mm, 10.5 Inch Barrel, 1-7 Twist, 1/2-28 Thread, R4 Handguard, A2 Flash Hide, Black
Rock River Arms AR0369B: Completed Pistol Upper Receiver, A4 .223/5.56mm, 4.5 Inch Barrel, 1-9 Twist, 1/2-28 Thread, Free-Float Handguard, Vortex Flash Hider, Black
Specifications for Rock River Arms A4 .223/5.56mm Completed Pistol Upper:
| Manufacturer: | Rock River Arms |
| Caliber: | 5.56x45mm NATO, .223 Wylde |
| Threads per Inch: | 1/2x28 |
| Handguard Type: | Free-Float |
| Finish: | Anodized |
| Color: | Black |
| Fabric/Material: | A2 Thermo Mold |
| Gas Block Journal Size-Diameter: | .750 in |
| Handguard Style: | Quad Rail |
| Gun Rail: | Full Top Rail |
| Included Accessories: | None |
| Barrel Material: | Chrome Moly |
| Bolt Carrier Group Included: | COM-SPEC |
| Charging Handle Included: | COM-SPEC |
| Magazine Included: | No |
| Mount Type: | M-LOK |
Package Contents:
- Rock River Arms A4 .223/5.56mm Completed Pistol Upper
- Bolt Carrier Group
- Charging Handle Assembly
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: California`s Proposition 65Proposition 65 Warning for California Consumers
For more information go to www.p65warnings.ca.gov
WARNING:Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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