![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-329-AR15P/UPK-329-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-329-AR15P/UPK-329-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/1-2023%20NEW-BCG-N+BCG-NB-BCG-N-HM+BCG-N2-OPTION-ADD-ON-OPTIONAL-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0-NEW-CH-OPTION-ADD-ON-OPTIONAL-2024-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%201%20SIGHTS-OPTIONS-2024-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%202%20SIGHTS-OPTIONS-2024-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/AR15-Laser-Bore-Sight-2024-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
New
-55 %
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-329-AR15P/UPK-329-AR15P-2026-2-19-800x800.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-329-AR15P/UPK-329-AR15P-A-2026-2-19-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/1-2023%20NEW-BCG-N+BCG-NB-BCG-N-HM+BCG-N2-OPTION-ADD-ON-OPTIONAL-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0-NEW-CH-OPTION-ADD-ON-OPTIONAL-2024-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%201%20SIGHTS-OPTIONS-2024-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%202%20SIGHTS-OPTIONS-2024-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/AR15-Laser-Bore-Sight-2024-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]")
AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK329 [ASSEMBLED]
We ship fast
Most orders usually ship out fast. CERAKOTE products may take 5-7 business days to process.
- Stock: In Stock
- Model: UPK-329-AR15P
Product Views: 8
$279.99
$619.99
Available Options
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CERAKOTE GLACIER SILVER |AR-15 Charging Handle
CERAKOTE GLACIER SILVER |AR-15 Ejection Port Cover
CERAKOTE GLACIER SILVER |AR-15/.223/5.56 Birdcage Muzzle Brake W/ Crush Washer
5'' 5.56 NATO 1:5 5R TWIST NITRIDEPISTOL BARREL AND MICRO GAS TUBE | BRPIS-MICRO+GT-MICRO
.750 LOW PROFILE STEEL GAS BLOCK WITHROLL PINS & WRENCH -BLACK | GB01-B
WARNING to California Residents:⚠️ According to California's Proposition 65, some products sold on this website may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Tags:
AR-15
, .223
, 5.56
, 5" BARREL
, 4'' HANDGUARD
, PISTOL UPPER BUILD
, UPK329
, ASSEMBLED - OutdoorSportsUSA