![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/UPK-40-AR15C524%20b-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/2ab-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/3ab-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/GROUP-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/NEW-SIGHTS%20OPTION-ADD-ON-OPTIONAL-1-1000x1000.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/NEW-CH-OPTION-ADD-ON-OPTIONAL-1000x1000.jpg)
-42 %
![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/UPK-40-AR15C524%20b-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/2ab-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/3ab-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/GROUP-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/NEW-SIGHTS%20OPTION-ADD-ON-OPTIONAL-1-800x800.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/NEW-CH-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]
- Stock: In Stock
- Model: UPK-40-AR15C
Product Views: 15754
$259.99
$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" 15"
FML-TC-R-C |
Handguard
AR-15 M-Lok Handguard "C" Relief Cut - Black| 10" 12" 15"
BCA 16" 5.56 Nato Rifle Barrel | Parkerized | Made In U.S.A
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
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
,