![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK235 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-235-AR15P/UPK-235-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK235 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK235 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-235-AR15P/UPK-235-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK235 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT GOLD | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE GOLD | AR-15 CHARGING HANDLE| CH223-GLD-LATCH-01CERAKOTE GOLD | AR-15 EJECTION PORTCOVER | DUST COVER ASSEMBLY | DC223-GLDCERAKOTE GOLD |AR-15..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK236 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-236-AR15P/UPK-236-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK236 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK236 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-236-AR15P/UPK-236-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK236 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT HUNTER ORANGE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE HUNTER ORANGE | AR-15 CHARGING HANDLE| CH223-ORG-LATCH-01CERAKOTE HUNTER ORANGE | AR-15 EJECTION PORTCOVER | DUST COVER ASS..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK237 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-237-AR15P/UPK-237-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK237 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK237 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-237-AR15P/UPK-237-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK237 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT BRIGHT WHITE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE BRIGHT WHITE | AR-15 CHARGING HANDLE| CH223-WHI-LATCH-01CERAKOTE BRIGHT WHITE | AR-15 EJECTION PORTCOVER | DUST CO..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK238 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-238-AR15P/UPK-238-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK238 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK238 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-238-AR15P/UPK-238-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK238 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT ROBINS EGG | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE ROBINS EGG | AR-15 CHARGING HANDLE| CH223-RGB-LATCH-01CERAKOTE ROBINS EGG | AR-15 EJECTION PORTCOVER | DUST COVER AS..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK239 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-239-AR15P/UPK-239-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK239 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK239 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-239-AR15P/UPK-239-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK239 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT RUBY RED | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE RED | AR-15 CHARGING HANDLE| CH223-RED-LATCH-01CERAKOTE RED | AR-15 EJECTION PORTCOVER | DUST COVER ASSEMBLY | DC223-R..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK240 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-240-AR15P/UPK-240-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK240 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK240 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-240-AR15P/UPK-240-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK240 [ASSEMBLED]")
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTEGRADIENT SIG PINK | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE PINK | AR-15 CHARGING HANDLE| CH223-PNK-LATCH-01CERAKOTE PINK | AR-15 EJECTION PORTCOVER | DUST COVER ASSEMBLY | DC223..
$279.99 $619.99
![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]")
New
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTE GRADIENT SLV |AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE GLACIER SILVER |AR-15 Charging HandleCERAKOTE GLACIER SILVER |AR-15 Ejection Port CoverCERAKOTE GLACIER SILVER |AR-15/.223/5.56 Birdcage Muzzle..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK330 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-330-AR15P/UPK-330-AR15P-2026-2-19-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK330 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK330 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-330-AR15P/UPK-330-AR15P-A-2026-2-19-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK330 [ASSEMBLED]")
New
-55 %
AR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackCERAKOTE GRADIENT BLU |AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE BLUE FLAME |AR-15 Charging HandleCERAKOTE BLUE FLAME |AR-15 Ejection Port CoverCERAKOTE BLUE FLAME |AR-15/.223/5.56 Birdcage Muzzle Brake W/ Cr..
$279.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK187 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-187-AR15P/UPK-187-AR15P-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK187 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK187 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-187-AR15P/UPK-187-AR15P-A-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK187 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT GOLD | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE GOLD | AR-15 CHARGINGHANDLE | CH223-GLD-LATCH-01CERAKOTE GOLD | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-GLDCERAKOTE GOLD | FORWARD ASSISTCOMPLETE MIL SPEC ASSEMBLY ..
$269.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK188 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-188-AR15P/0%201%2025-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK188 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK188 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-188-AR15P/0%202%2025-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK188 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT HUNTER ORANGE | AR-15 4" Parallelogram M-Lok Handguard - Made inUSACERAKOTE HUNTER ORANGE | AR-15 CHARGINGHANDLE | CH223-ORG-LATCH-01CERAKOTE HUNTER ORANGE | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-ORGCERAKOTE HUNTER ORANG..
$269.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK189 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-189-AR15P/UPK-189-AR15P-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK189 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK189 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-189-AR15P/UPK-189-AR15P-A-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK189 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT BRIGHT WHITE | AR-15 4" Parallelogram M-Lok Handguard - Made inUSACERAKOTE BRIGHT WHITE | AR-15 CHARGINGHANDLE | CH223-WHI-LATCH-01CERAKOTE BRIGHT WHITE | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-WHICERAKOTE BRIGHT WHITE&nb..
$269.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK190 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-190-AR15P/UPK-190-AR15P-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK190 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK190 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-190-AR15P/UPK-190-AR15P-A-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK190 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT ROBINS EGG | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE ROBINS EGG | AR-15 CHARGINGHANDLE | CH223-RGB-LATCH-01CERAKOTE ROBINS EGG | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-RGBCERAKOTE ROBIN..
$269.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK191 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-191-AR15P/UPK-191-AR15P-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK191 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK191 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-191-AR15P/UPK-191-AR15P-A-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK191 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT RUBY RED | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE RED | AR-15 CHARGINGHANDLE | CH223-RED-LATCH-01CERAKOTE RED | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-REDCERAKOTE RED | FORWARD AS..
$269.99 $619.99
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK192 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-192-AR15P/UPK-192-AR15P-1000x1000.png "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK192 [ASSEMBLED]")
![AR-15 .223/5.56 5" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK192 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-192-AR15P/UPK-192-AR15P-A-1000x1000.jpg "AR-15 .223/5.56 5\" BARREL W/ 4'' HANDGUARD | PISTOL UPPER BUILD UPK192 [ASSEMBLED]")
-56 %
Out Of Stock
AR-15 MIL-SPEC UPPER RECEIVER| 223UPCERAKOTEGRADIENT SIG PINK | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE PINK | AR-15 CHARGINGHANDLE | CH223-PNK-LATCH-01CERAKOTE PINK | AR-15 EJECTIONPORT COVER | DUST COVER ASSEMBLY | DC223-PNKCERAKOTE PINK | FORWARD..
$269.99 $619.99
![AR-15 .223/5.56 5" Barrel W/ 4'' Handguard | Pistol Upper Build UPK234 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-234-AR15P/0%200%2025ab-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4'' Handguard | Pistol Upper Build UPK234 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel W/ 4'' Handguard | Pistol Upper Build UPK234 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-234-AR15P/0%208%2025a-1000x1000.jpg "AR-15 .223/5.56 5\" Barrel W/ 4'' Handguard | Pistol Upper Build UPK234 [ASSEMBLED]")
-55 %
CERAKOTE SPLATTER| AR-15 MIL-SPEC UPPER RECEIVER -BASE BRIGHT WHITE- PATTERN- RGB-RED-PNK-ORG-LEM-ZBG- MADE IN U.S.A5'' 5.56 NATO 1:5 5R Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.A.750 Low Profile Steel Gas Block with Roll Pins & Wrench -BlackCerakote
Splatter| AR-15 4'' ..
$289.99 $639.99
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK229 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-229-AR15P/0x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK229 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK229 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-229-AR15P/1x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK229 [ASSEMBLED]")
-57 %
5'' 5.56 NATO 1:5 5R Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - Black.750 Low Profile Steel Gas Block with Roll Pins & Wrench -BlackAR-15 4"Parallelogram M-Lok Handguard - Made in USAOptionsBLA..
$259.99 $609.99
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK233 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-233-AR15P/0%201%2025x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK233 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK233 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-233-AR15P/0%202%2025x-1000x1000.jpg "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK233 [ASSEMBLED]")
-58 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackAR-15 4"Parallelogram M-Lok Handguard - Made in USAAR-15 Ejection Port Cover | Dust Cover Assembly- Fear Nothing - Love EverythingA..
$269.99 $639.99
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK122 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-122-AR15P/0%201%2025x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK122 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK122 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-122-AR15P/2-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK122 [ASSEMBLED]")
-58 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Mil-Spec Upper Receiver - Made In U.S.AAR-15 Ejection Port Cover | Dust Cover Assembly- Pumpkin .223/5.56AR-15 Charging Handle| Flag and Pumpkin.750 Low Profile Steel
Gas Block with Roll Pins & Wrench -Bla..
$229.99 $549.99
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK121 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-121-AR15P/0%202%2025zz-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK121 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK121 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-121-AR15P/0%203%2025%20x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK121 [ASSEMBLED]")
-60 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Mil-Spec Upper Receiver - Made In U.S.AAR-15 Ejection Port Cover | Dust Cover Assembly- Pumpkin .223/5.56AR-15 Charging Handle| Flag and Pumpkin.750 Low Profile Steel
Gas Block with Roll Pins & Wrench -Bla..
$209.99 $529.99
![CERAKOTE OPTIONS|AR-15 5'' BARREL 4'' M-LOK HANDGUARD |PISTOL UPPER BUILD UPK116 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-116-AR15P/UPK-116-AR15P-2025-1000x1000.png "CERAKOTE OPTIONS|AR-15 5'' BARREL 4'' M-LOK HANDGUARD |PISTOL UPPER BUILD UPK116 [ASSEMBLED]")
![CERAKOTE OPTIONS|AR-15 5'' BARREL 4'' M-LOK HANDGUARD |PISTOL UPPER BUILD UPK116 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-116-AR15P/UPK-116-AR15P-2025-BBR-1000x1000.png "CERAKOTE OPTIONS|AR-15 5'' BARREL 4'' M-LOK HANDGUARD |PISTOL UPPER BUILD UPK116 [ASSEMBLED]")
-56 %
5'' 5.56 NATO 1:5 5R Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Charging Handle | CH223AR-15 Ejection Port Cover | Dust Cover Assembly- Skull Stay Spooky.750 Low Profile Steel Gas Block with Roll Pins & Wrench -BlackLow-Profile Micro Steel AR Gas Block.750 + Stai..
$239.99 $549.99
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK115 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-115-AR15P/0x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK115 [ASSMBLED]")
![AR-15 .223/5.56 5" Barrel 4" Handguard M Lok| PISTOL UPPER BUILD UPK115 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-115-AR15P/1x-1000x1000.png "AR-15 .223/5.56 5\" Barrel 4\" Handguard M Lok| PISTOL UPPER BUILD UPK115 [ASSMBLED]")
-58 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Ejection Port Cover | Dust Cover Assembly- Spider WebForward Assist Complete Mil Spec AssemblyAR-15 Charging Handle | Latch 01.750 Low Profile Steel
Gas Block with Roll Pins & Wrench -BlackAR-15/.223/5.56 ..
$229.99 $549.99
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok| PISTOL UPPER BUILD UPK96 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-96-AR15P/0%200x-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok| PISTOL UPPER BUILD UPK96 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok| PISTOL UPPER BUILD UPK96 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-96-AR15P/0%201x-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok| PISTOL UPPER BUILD UPK96 [ASSEMBLED]")
-60 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Mil-Spec Upper Receiver - Made In U.S.AAR-15 Angle Cut Clamp onM-LOK Handguard 4.5" - Made in USA.750 Low Profile Steel
Gas Block with Roll Pins & Wrench -BlackColor OptionsBLACKAR-15 Charging ..
$209.99 $529.99
![AR-15 .223/5.56 6" Barrel W/ 7" Handguard | PISTOL UPPER BUILD UPK349 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-349-AR15P/UPK-349-AR15P-1000x1000.png "AR-15 .223/5.56 6\" Barrel W/ 7\" Handguard | PISTOL UPPER BUILD UPK349 [ASSEMBLED]")
![AR-15 .223/5.56 6" Barrel W/ 7" Handguard | PISTOL UPPER BUILD UPK349 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-349-AR15P/UPK-349-AR15P-BLK-1000x1000.png "AR-15 .223/5.56 6\" Barrel W/ 7\" Handguard | PISTOL UPPER BUILD UPK349 [ASSEMBLED]")
New
-60 %
6'' 5.56 NATO 1:7 Twist Barrel and Micro Length Gas System | Made in U.S.AAR-15 Mil-Spec Upper Receiver - Made In U.S.A6'' 5.56 NATO 1:7 Twist Barrel and Micro Length Gas System | Made in U.S.A.750 Low Profile Steel
Gas Block with Roll Pins & Wrench -Black6'' 5.56 NATO 1:7 Twist Bar..
$209.99 $529.99
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok Options| PISTOL UPPER BUILD UPK95 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-95-AR15P/0%200%2025%20x-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok Options| PISTOL UPPER BUILD UPK95 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok Options| PISTOL UPPER BUILD UPK95 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-95-AR15P/UPK-95-AR15P%200%202024-1000x1000.jpg "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok Options| PISTOL UPPER BUILD UPK95 [ASSEMBLED]")
-55 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15/47/9/300 Custom
Lightweight Side Cut Billet Upper Receiver - BlackAR-15 Charging Handle | Don't Tread On MeAR-15 Ejection Port Cover | Dust Cover Assembly- American Flag Laser Etched.750 Low Profile Steel
Gas..
$239.99 $529.99
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok| PISTOL UPPER BUILD UPK87 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-87-AR15P/0%200%2025x-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok| PISTOL UPPER BUILD UPK87 [ASSEMBLED]")
![AR-15 .223/5.56 5" Barrel W/ 4" Handguard M Lok| PISTOL UPPER BUILD UPK87 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-87-AR15P/0%201%2025x-1000x1000.png "AR-15 .223/5.56 5\" Barrel W/ 4\" Handguard M Lok| PISTOL UPPER BUILD UPK87 [ASSEMBLED]")
-54 %
5'' 5.56 NATO 1:5 5R
Twist Nitride Pistol Barrel and Micro Gas Tube | Made in U.S.AAR-15 Billet
Stripped Mod 1 Upper Receiver | Made In USAAR-15 4"Parallelogram M-Lok Handguard - Made in USAAR-15 Talon Charging Handle | V2AR-15 Ejection Port
Cover | Dust Cover Assembly.750 Low..
$259.99 $569.99
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