![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/0%2092%20UPK-40-AR15C-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/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/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%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/0%202024-01-NEW-SIGHTS%20OPTION-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%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/0-NEW-CH-OPTION-ADD-ON-OPTIONAL-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/0%2092%20UPK-40-AR15C-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/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/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%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/0%202024-01-NEW-SIGHTS%20OPTION-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%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/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]
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Most orders usually ship out fast. Cerakote products may take 5-7 business days to process.
- Stock: In Stock
- Model: UPK-40-AR15C
Product Views: 32113
$249.99
$449.99
Available Options
FSSM | Handguard
AR-15 M-LOK Super Slim Free Float Handguard with Steel Barrel Nut | Made in USA| 10" 12" 15"
FML-R-C |
Handguard
AR-15 Combat Modular M-Lok Handguard "C" Cut - Black| 10" 12"
FML-TC-R-C |
Handguard
AR-15 M-Lok Handguard "C" Relief Cut - Black| 10" 12" 15"
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
,