Uppers

Shop precision-engineered upper receivers for rifles, designed for accuracy, reliability, and custom builds.
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Picture of Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15

$745.48 $551.87
Picture of Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15C

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15C

$745.48 $695.35
Picture of Battle Arms Development WORKHORSE, Upper Receiver Assembly, 223 Remington/556NATO, 16" Barrel, Mid-length Gas System, Anodized Finish, Black, A2 Flash Hider, WORKHORSE 15" M-LOK Free Float Handguard, Does Not Include Bolt Carrier Group or Charging Handle WH-UR-16-556

Battle Arms Development WORKHORSE, Upper Receiver Assembly, 223 Remington/556NATO, 16" Barrel, Mid-length Gas System, Anodized Finish, Black, A2 Flash Hider, WORKHORSE 15" M-LOK Free Float Handguard, Does Not Include Bolt Carrier Group or Charging Handle WH-UR-16-556

$529.99 $442.77
Picture of Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16B-Y-15

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16B-Y-15

$692.98 $665.47
Picture of BCM UPPER REC ASSEMBLY MK2 BCM4-UR-MK2

BCM UPPER REC ASSEMBLY MK2 BCM4-UR-MK2

$165.00 $114.79
Picture of CMMG DISSENT, Complete Upper Receiver, 5.7X28MM, 6.5" Threaded Barrel, 1/2x28, CMMG Zeroed Linear Compensator, Cerakote Finish, Charcoal Green, M-LOK Free Float Handguard, Fits AR-15/CMMG MK57 Lower Receiver, Includes 1913 Picatinny Rail End Plate 57BA8AE-CG

CMMG DISSENT, Complete Upper Receiver, 5.7X28MM, 6.5" Threaded Barrel, 1/2x28, CMMG Zeroed Linear Compensator, Cerakote Finish, Charcoal Green, M-LOK Free Float Handguard, Fits AR-15/CMMG MK57 Lower Receiver, Includes 1913 Picatinny Rail End Plate 57BA8AE-CG

$1,449.95 $993.37
Picture of Colt's Manufacturing Complete Upper, 223 Rem/556NATO, 16" Barrel, Black, MLOK Free Float Handguard LE6920EPR-CK

Colt's Manufacturing Complete Upper, 223 Rem/556NATO, 16" Barrel, Black, MLOK Free Float Handguard LE6920EPR-CK

$1,049.00 $953.64
Picture of Colt's Manufacturing Upper, 556NATO, 14.5", Black LE6921EPR-CK

Colt's Manufacturing Upper, 556NATO, 14.5", Black LE6921EPR-CK

$1,049.00 $1,021.65
Picture of Colt's Manufacturing Complete Upper, 223 Rem/556NATO, 11.5" Lightweight Barrel, Black Finish, A2 Fixed Front Sight, Magpul BUIS Rear Sight LE6933CK

Colt's Manufacturing Complete Upper, 223 Rem/556NATO, 11.5" Lightweight Barrel, Black Finish, A2 Fixed Front Sight, Magpul BUIS Rear Sight LE6933CK

$909.99 $685.13
Picture of Colt's Manufacturing Upper, 556NATO, 11.5", Black LE6933EPR-CK

Colt's Manufacturing Upper, 556NATO, 11.5", Black LE6933EPR-CK

$1,049.00 $953.64
Free Shipping! Picture of Colt M4 LE6943 UPPER GROUP 11.5IN WITH BCG AND SIGHTS LE6943CK

Colt M4 LE6943 UPPER GROUP 11.5IN WITH BCG AND SIGHTS LE6943CK

$1,399.00 $1,097.24
Picture of Colt's Manufacturing Upper, 223REM/556NATO, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps SP63528

Colt's Manufacturing Upper, 223REM/556NATO, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps SP63528

$179.99 $142.37
Picture of FN USA FN 15 Military Collector Series M4 Complete Upper Receiver Assembly 5.56mm 16" Barrel 36318-07

FN USA FN 15 Military Collector Series M4 Complete Upper Receiver Assembly 5.56mm 16" Barrel 36318-07

$1,551.66 $1,410.60
Picture of FN USA FN 15 Military Collector Series M16A4 Complete Upper Receiver Assembly 5.56mm 20" Barrel 36320-06

FN USA FN 15 Military Collector Series M16A4 Complete Upper Receiver Assembly 5.56mm 20" Barrel 36320-06

$1,551.66 $1,311.47
TRENDING Picture of Daniel Defense MK18 Upper Group 5.56x45mm NATO 10.30" Black Phosphate Barrel, 7075-T6 Aluminum Black Anodized Receiver, Flat Dark Earth DD RISII MK18 Handguard for AR-15 2300408013011

Daniel Defense MK18 Upper Group 5.56x45mm NATO 10.30" Black Phosphate Barrel, 7075-T6 Aluminum Black Anodized Receiver, Flat Dark Earth DD RISII MK18 Handguard for AR-15 2300408013011

$1,641.00 See Price in Cart
Picture of Aero Precision Receiver 308 Win 7075-T6 Aluminum Flat Dark Earth Cerakote Receiver for M5 Platform APAR308505C

Aero Precision Receiver 308 Win 7075-T6 Aluminum Flat Dark Earth Cerakote Receiver for M5 Platform APAR308505C

$210.00 $121.40
Picture of Aero Precision Assembled Receiver 308 Win 7075-T6 Aluminum Black Hard Coat Anodized Receiver for M5 Platform APAR308503AC

Aero Precision Assembled Receiver 308 Win 7075-T6 Aluminum Black Hard Coat Anodized Receiver for M5 Platform APAR308503AC

$199.00 $139.28
Picture of Aero Precision M5 Threaded Stripped Upper Receiver - Anodized Black APAR308503C

Aero Precision M5 Threaded Stripped Upper Receiver - Anodized Black APAR308503C

$190.00 $110.36
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