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-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USACERAKOTE SPLATTER|AR-15 MIL-SPEC UPPER RECEIVER -BASE BRIGHT WHITE- PATTERN- RGB-RED-PNK-ORG-LEM-ZBG-MADE IN U.S.A CERAKOTE SPLATTER WHI |AR-15 4" Parallelogram M-Lok Handguard - Base WHI - Pattern -RGB.RED.PNK.ORG.LEM.ZBG - MADE ..
$319.99 $679.99
New
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec Upper Receiver - Made In U.S.ACERAKOTE 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 FL..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT GOLD| AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE GOLD | AR-15 Charging HandleCERAKOTE GOLD | AR-15Ejection Port CoverCERAKOTE GOLD | ForwardAssist Complete..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT HUNTER ORANGE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE HUNTER ORANGE | AR-15 Charging HandleCERAKOTE HUNTER ORANGE |AR-15 Ejection Port CoverCERAKO..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT SIGPINK | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE PINK | AR-15 Charging HandleCERAKOTE PINK | AR-15Ejection Port CoverCERAKOTE PINK | ForwardAss..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT RUBYRED | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE RED | AR-15 Charging HandleCERAKOTE RED | AR-15Ejection Port CoverCERAKOTE RED | ForwardAssist..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENTROBINS EGG | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE ROBINS EGG | AR-15 Charging HandleCERAKOTE ROBINS EGG |AR-15 Ejection Port CoverCERAKOTE ROB..
$299.99 $639.99
New
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec Upper Receiver - Made In U.S.ACERAKOTE 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 GL..
$299.99 $639.99
-53 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENTBRIGHT WHITE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE BRIGHT WHITE |AR-15 Charging HandleCERAKOTE BRIGHT WHITE |AR-15 Ejection Port CoverCERAKOT..
$299.99 $639.99
-56 %
Out Of Stock
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Madein USAAR-15 Mil-Spec UpperReceiver - Made In U.S.AAR-15 4'' Combat ModularM-Lok Handguard "C" Cut - BlackAR-10 / LR-308 A2 StyleBirdcage Muzzle BrakeAR-9mm Pistol Buffer Tube Kit W/ Foam Pad - 7oz BufferAR-15 Lower ReceiverParts Kit | Withou..
$279.99 $629.99
-53 %
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Made
in USAAR-15 Billet Stripped Mod
1 Upper Receiver - Made In U.S.AAR-15 Charging Handle|
Spider and WebAR-15 Ejection Port Cover
| Dust Cover Assembly- Spider WebAR-10 / LR-308 A2 StyleBirdcage Muzzle BrakeAR-9mm Pistol Buffer Tube Kit W/..
$329.99 $699.99
-55 %
Out Of Stock
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Made
in USAAR-15 Charging Handle | Latch 01AR-15 Ejection Port Cover | Dust Cover Assembly- Skull Stay SpookyAR-10 / LR-308 A2 Style Birdcage Muzzle BrakeAR-9mm Pistol Buffer Tube Kit W/ Foam Pad - 7oz BufferAR-15 Lower Receiver Parts Kit W/ Ov..
$289.99 $649.99
-56 %
Out Of Stock
AR-40/ 40 S&W 4"
1:16 Twist Black Nitride Finish - Made in USAAR-15 Charging Handle |
Latch 01AR-15 Ejection Port Cover
| Dust Cover Assembly- American Flag Laser EtchedForward Assist Complete
Mil Spec AssemblyAR-10 / LR-308Flash Can Muzzle Brake Aluminum V.2AR-15 Lower Receiver
Parts Kit&n..
$279.99 $629.99
![AR-40/ 40 S&W 4" Barrel W/ 4" Handguard | Pistol Upper Build UPK275 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-275-AR40P/UPK-275-AR40P-2026-4-14-1000x1000.png "AR-40/ 40 S&W 4\" Barrel W/ 4\" Handguard | Pistol Upper Build UPK275 [ASSEMBLED]")
![AR-40/ 40 S&W 4" Barrel W/ 4" Handguard | Pistol Upper Build UPK275 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-275-AR40P/UPK-275-AR40P-A-2026-4-14-BLK-1000x1000.jpg "AR-40/ 40 S&W 4\" Barrel W/ 4\" Handguard | Pistol Upper Build UPK275 [ASSEMBLED]")
-57 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USACERAKOTE SPLATTER|AR-15 MIL-SPEC UPPER RECEIVER -BASE BRIGHT WHITE- PATTERN- RGB-RED-PNK-ORG-LEM-ZBG-MADE IN U.S.A CERAKOTE SPLATTER WHI |AR-15 4" Parallelogram M-Lok Handguard - Base WHI - Pattern -RGB.RED.PNK.ORG.LEM.ZBG - MADE ..
$249.99 $579.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK269 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-269-AR40P/UPK-269-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK269 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK269 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-269-AR40P/UPK-269-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK269 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT GOLD| AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE GOLD | AR-15 Charging HandleCERAKOTE GOLD | AR-15Ejection Port CoverCERAKOTE GOLD | ForwardAssist Complete..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK270 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-270-AR40P/UPK-270-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK270 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK270 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-270-AR40P/UPK-270-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK270 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT HUNTER ORANGE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE HUNTER ORANGE | AR-15 Charging HandleCERAKOTE HUNTER ORANGE |AR-15 Ejection Port CoverCERAKO..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK271 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-271-AR40P/UPK-271-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK271 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK271 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-271-AR40P/UPK-271-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK271 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENTBRIGHT WHITE | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE BRIGHT WHITE |AR-15 Charging HandleCERAKOTE BRIGHT WHITE |AR-15 Ejection Port CoverCERAKOT..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK272 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-272-AR40P/UPK-272-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK272 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK272 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-272-AR40P/UPK-272-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK272 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENTROBINS EGG | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE ROBINS EGG | AR-15 Charging HandleCERAKOTE ROBINS EGG |AR-15 Ejection Port CoverCERAKOTE ROB..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK273 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-273-AR40P/UPK-273-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK273 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK273 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-273-AR40P/UPK-273-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK273 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT RUBYRED | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE RED | AR-15 Charging HandleCERAKOTE RED | AR-15Ejection Port CoverCERAKOTE RED | ForwardAssist..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK274 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-274-AR40P/UPK-274-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK274 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK274 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-274-AR40P/UPK-274-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK274 [ASSEMBLED]")
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE GRADIENT SIGPINK | AR-15 4" Parallelogram M-Lok Handguard - Made in USACERAKOTE PINK | AR-15 Charging HandleCERAKOTE PINK | AR-15Ejection Port CoverCERAKOTE PINK | ForwardAss..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK349 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-349-AR40P/UPK-349-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK349 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK349 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-349-AR40P/UPK-349-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK349 [ASSEMBLED]")
New
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE 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 ..
$239.99 $569.99
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK350 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-350-AR40P/UPK-350-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK350 [ASSEMBLED]")
![AR-40/ 40 S&W 4" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK350 [ASSEMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-350-AR40P/UPK-350-AR40P-A-1000x1000.jpg "AR-40/ 40 S&W 4\" BARREL 4'' HANDGUARD | PISTOL UPPER BUILD UPK350 [ASSEMBLED]")
New
-58 %
AR-40/ 40 S&W 4"1:16 Twist Black Nitride Finish - Made in USAAR-15 Mil-Spec UpperReceiver - Made In U.S.ACERAKOTE 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 GLA..
$239.99 $569.99
![AR-40/ 40 S&W 4" Barrel 4" Handguard | PISTOL UPPER BUILD UPK120 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-120-AR40P/0%200%2025-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard | PISTOL UPPER BUILD UPK120 [ASSMBLED]")
![AR-40/ 40 S&W 4" Barrel 4" Handguard | PISTOL UPPER BUILD UPK120 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-120-AR40P/UPK-120-AR40P-BLK-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard | PISTOL UPPER BUILD UPK120 [ASSMBLED]")
-58 %
Out Of Stock
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Madein USAAR-15 Mil-Spec UpperReceiver - Made In U.S.AAR-15 4'' Combat ModularM-Lok Handguard "C" Cut - BlackAR-10 / LR-308 A2 StyleBirdcage Muzzle Brake COLOR OPTIONBLACKAR-15 Charging Handle |Latch 01AR-15 Ejection Port Cover| Dust Cover ..
$229.99 $549.99
![AR-40/ 40 S&W 4" Barrel 4" Handguard Option | PISTOL UPPER BUILD UPK119 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-119-AR40P/0%200%2025%20z-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard Option | PISTOL UPPER BUILD UPK119 [ASSMBLED]")
![AR-40/ 40 S&W 4" Barrel 4" Handguard Option | PISTOL UPPER BUILD UPK119 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-119-AR40P/0%202%2025%20%20z-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard Option | PISTOL UPPER BUILD UPK119 [ASSMBLED]")
-57 %
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Made
in USAAR-15 Billet Stripped Mod
1 Upper Receiver - Made In U.S.AAR-15 Charging Handle|
Spider and WebAR-15 Ejection Port Cover
| Dust Cover Assembly- Spider WebAR-10 / LR-308 A2 StyleBirdcage Muzzle Brake HANDGUARD OPTIONAR-15 Angl..
$259.99 $599.99
![AR-40/ 40 S&W 4" Barrel 4" Handguard M Lok | PISTOL UPPER BUILD UPK118 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-118-AR40P/UPK-118-AR40P-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard M Lok | PISTOL UPPER BUILD UPK118 [ASSMBLED]")
![AR-40/ 40 S&W 4" Barrel 4" Handguard M Lok | PISTOL UPPER BUILD UPK118 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-118-AR40P/UPK-118-AR40P-BLK-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard M Lok | PISTOL UPPER BUILD UPK118 [ASSMBLED]")
-58 %
Out Of Stock
AR-40/ 40 S&W 4" 1:16 Twist Black Nitride Finish - Made
in USAAR-15 Charging Handle | Latch 01AR-15 Ejection Port Cover | Dust Cover Assembly- Skull Stay SpookyAR-10 / LR-308 A2 Style Birdcage Muzzle Brake COLOR OPTION:BLACKAR-15/47/9/300 Custom Lightweight Side Cut Billet Upper Receiver -..
$239.99 $569.99
![AR-40/ 40 S&W 4" Barrel 4" Handguard M Lok | PISTOL UPPER BUILD UPK117 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-117-AR40P/0%200%2025-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard M Lok | PISTOL UPPER BUILD UPK117 [ASSMBLED]")
![AR-40/ 40 S&W 4" Barrel 4" Handguard M Lok | PISTOL UPPER BUILD UPK117 [ASSMBLED]](https://outdoorsportsusa.com/image/cache/catalog/demo/UPK-117-AR40P/1%201%2025-1000x1000.png "AR-40/ 40 S&W 4\" Barrel 4\" Handguard M Lok | PISTOL UPPER BUILD UPK117 [ASSMBLED]")
-58 %
Out Of Stock
AR-40/ 40 S&W 4"
1:16 Twist Black Nitride Finish - Made in USAAR-15 Charging Handle |
Latch 01AR-15 Ejection Port Cover
| Dust Cover Assembly- American Flag Laser EtchedForward Assist Complete
Mil Spec AssemblyAR-10 / LR-308Flash Can Muzzle Brake Aluminum V.2 COLOR OPTION:BLACKAR-15 Mil..
$229.99 $549.99
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