![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/1d-1000x1000.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/2d-1000x1000.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/3d-1000x1000.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/4ab-1000x1000.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/5d-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/a%20FSSM-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/b%20FML-R-C--1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/c%20FML-TC-R--1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0%202024%20BARRELS-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [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 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0-NEW-CH-OPTION-ADD-ON-OPTIONAL-2024-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0%202024%20Rifle%20Scope%20Add-on-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%201%20SIGHTS-OPTIONS-2024-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%202%20SIGHTS-OPTIONS-2024-1000x1000.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/AR15-Laser-Bore-Sight-2024-1000x1000.jpg)
-44 %
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/1d-800x800.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/2d-800x800.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/3d-800x800.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/4ab-800x800.png)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/5d-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/a%20FSSM-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/b%20FML-R-C--800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-40-AR15C/c%20FML-TC-R--800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0%202024%20BARRELS-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [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 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0-NEW-CH-OPTION-ADD-ON-OPTIONAL-2024-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/0%202024%20Rifle%20Scope%20Add-on-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%201%20SIGHTS-OPTIONS-2024-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/0%202%20SIGHTS-OPTIONS-2024-800x800.jpg)
![AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED] AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/RIFLE-UPPER-OPTION-PIC/2024%20NOVEMBER%20OPTIONS/AR15-Laser-Bore-Sight-2024-800x800.jpg)
AR-15 5.56 16'' Barrel W/ 10'' 12'' 15'' M-Lok Handguard option | Carbine Upper Build UPK40 [ASSEMBLED]
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- Stock: In Stock
- Model: UPK-40-AR15C
Product Views: 43631
$249.99
$449.99
Available Options
Handguard Option
AR-15 10'' M-LOK SuperSlim Free Float Handguard with Steel Barrel Nut - Made in U.S.A
AR-15 12'' M-LOK SuperSlim Free Float Handguard with Steel Barrel Nut - Made in U.S.A
AR-15 15'' M-LOK SuperSlim Free Float Handguard with Steel Barrel Nut - Made in U.S.A
AR-15 10'' Angle CutClamp on M-LOK Handguard - Made in U.S.A
AR-15 12'' Angle CutClamp on M-LOK Handguard - Made in U.S.A
AR-15 15'' Angle CutClamp on M-LOK Handguard - Made in U.S.A
AR-15 10''Extended Length One Piece Free Float Handguard
AR-15 12''Extended Length One Piece Free Float Handguard
AR-15 15''Extended Length One Piece Free Float Handguard
AR-15 1/2x28 Birdcage Muzzle Brake W/Crush Washer
AR-15 Mil-Spec Upper Receiver | Made in U.S.A.
AR-15 Tactical Rifle Charging Handle Assembly
AR-15 Ejection Port Cover | Dust Cover Assembly
Forward Assist Complete Mil-Spec Assembly
Low-Profile Micro Steel AR Gas Block .750-Black Phosphate Finish
9.75" Stainless Steel Gas Tube-Carbine Length
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:
OUTDOORSPORTSUSA
, 12 INCH HANDGUARD
, M-LOK
, STEEL BARREL NUT
, BIRDCAGE MUZZLE BRAKE
, NATO
, 16 INCH BARREL
, 1:8 TWIST
, PARKERIZED
, CARBINE GAS SYSTEM
, MADE IN U.S.A
, UPPER RECEIVER
, STRIPPED UPPER
, BCG
, BLACK NITRIDE
,