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Upper Receivers

Browse our selection of Upper Receivers from leading manufacturers, offering stripped upper receivers for custom builds, complete upper assemblies with barrels and handguards, forged uppers meeting mil-spec standards, billet uppers with enhanced features, and side-charging upper receivers for AR-platform rifles.

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Showing 1–24 of 543 products
Luth-AR UR-01-M16 A1 Stripped Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize
Luth-AR
UR-01-M16 A1 Stripped Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize
$150.35
Price shown in cart
Ruger RUG AR Upper Receiver Assembled
Ruger
RUG AR Upper Receiver Assembled
$169.95 $97.39 Save $72
Radian Weapons Upper/handguard Model 1 Low stock
Radian Weapons
Upper/handguard Model 1
$959.95
Price shown in cart
LBE Unlimited AR-15 5.56 NATO Complete Upper Black
LBE Unlimited
AR-15 5.56 NATO Complete Upper Black
$103.36
Radian Weapons Upper/handguard SET 15.5" BRN Low stock
Radian Weapons
Upper/handguard SET 15.5" BRN
$959.95
Price shown in cart
Patriot Ordnance Factory Minuteman Complete Upper 5.56x45mm NATO 16.50" Black Nitride Barrel Aluminum Low stock
Patriot Ordnance Factory
Minuteman Complete Upper 5.56x45mm NATO 16.50" Black Nitride Barrel Aluminum
$765.63
Faxon Firearms Enhanced Stripped Upper Receiver Low stock
Faxon Firearms
Enhanced Stripped Upper Receiver
$92.00
Price shown in cart
Rock River Arms LAR-15M Coyote .300 BLK 16" Complete Upper Black
Rock River Arms
LAR-15M Coyote .300 BLK 16" Complete Upper Black
$645.83
One Horse ONE 16" 5.56 NATO Complete Upper Rcvr Low stock
One Horse
ONE 16" 5.56 NATO Complete Upper Rcvr
$329.99 $270.78 Save $59
Stern Defense 015SD4INCHMOD4MLOK4INC 9mm
Stern Defense
015SD4INCHMOD4MLOK4INC 9mm
$443.48
Price shown in cart
Stern Defense 45 ACP 16.10" Black Melonite Barrel 7075-T6 Aluminum Anodized Receiver
Stern Defense
45 ACP 16.10" Black Melonite Barrel 7075-T6 Aluminum Anodized Receiver
$624.12
Price shown in cart
Radical Firearms Radical Uppr 556 16" 1-7 Mlok BLK
Radical Firearms
Radical Uppr 556 16" 1-7 Mlok BLK
$399.99 $265.14 Save $134
Daniel Defense DDM4 V7 223 Rem/5.56 NATO 16" Complete Upper
Daniel Defense
DDM4 V7 223 Rem/5.56 NATO 16" Complete Upper
$1,281.00
Price shown in cart
Sharps Bros. AR-15 Upper Receiver Stripped Upper Receiver Black Low stock
Sharps Bros.
AR-15 Upper Receiver Stripped Upper Receiver Black
$246.95
Price shown in cart
Radian Weapons R0427 Model 1 Builder Kit 10" Magpul M-LOK Handguard
Radian Weapons
R0427 Model 1 Builder Kit 10" Magpul M-LOK Handguard
$1,254.95
Price shown in cart
Andro Corp Industries ACI 300BO 10" Mlok Upper
Andro Corp Industries
ACI 300BO 10" Mlok Upper
$450.50
Price shown in cart
Andro Corp Industries ACI 300BO 16" Mlok Upper
Andro Corp Industries
ACI 300BO 16" Mlok Upper
$459.00
Price shown in cart
Andro Corp Industries ACI 300BO 8" Mlok Upper
Andro Corp Industries
ACI 300BO 8" Mlok Upper
$446.25
Price shown in cart
Andro Corp Industries ACI 556 10.3" NATO Mlok Upper
Andro Corp Industries
ACI 556 10.3" NATO Mlok Upper
$429.25
Price shown in cart
Andro Corp Industries ACI 556 16" NATO Mlok Upper
Andro Corp Industries
ACI 556 16" NATO Mlok Upper
$446.25
Price shown in cart
Andro Corp Industries ACI 556 8" NATO Mlok Upper
Andro Corp Industries
ACI 556 8" NATO Mlok Upper
$424.15
Price shown in cart
Andro Corp Industries ACI URS AR-15 Forged Upper Receiver 7075
Andro Corp Industries
ACI URS AR-15 Forged Upper Receiver 7075
$85.00
Price shown in cart
Aero Precision Assembled Receiver 308 Win 7075-T6 Aluminum Black Hard Coat Anodized Receiver Low stock
Aero Precision
Assembled Receiver 308 Win 7075-T6 Aluminum Black Hard Coat Anodized Receiver
$194.99
Price shown in cart
Alexander Arms Alexander AR15 DIY 16" Upper Low stock
Alexander Arms
Alexander AR15 DIY 16" Upper
$762.95 $546.88 Save $216

Uppers provide the foundation for AR barrel and handguard installation, determine ejection port and forward assist configuration, enable complete upper swaps for quick caliber changes, and allow builders to select specific features like M4 feed ramps or flat-top configurations. Browse our complete selection of rifle parts.