![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-327-AR15P/UPK-327-AR15P-2026-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-327-AR15P/UPK-327-AR15P-A-2026-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
New
-56 %
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-327-AR15P/UPK-327-AR15P-2026-800x800.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-327-AR15P/UPK-327-AR15P-A-2026-800x800.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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 UPK327 [ASSEMBLED]")
AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK327 [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-327-AR15P
Product Views: 29
$269.99
$619.99
Available Options
AR-15 MIL-SPEC UPPER RECEIVER| 223UP
CERAKOTE GRADIENT SLV |AR-15 4" Parallelogram M-Lok Handguard - Made in USA
CERAKOTE GLACIER SILVER |AR-15 Charging Handle
CERAKOTE GLACIER SILVER |AR-15 Ejection Port Cover
CERAKOTE GLACIER SILVER |Forward Assist Complete Mil Spec Assembly
CERAKOTE GLACIER SILVER |AR-15/.223/5.56 Multi Ported Compensator Upsilon Muzzle Brake
5'' 5.56 NATO 1:5 5R TWISTNITRIDE PISTOL BARREL AND MICRO GAS TUBE | BRPIS-MICRO+GT-MICRO
.750 LOW PROFILE STEEL GAS BLOCKWITH ROLL 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
, UPK327
, ASSEMBLED - OutdoorSportsUSA