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5.56x45 AR-15 Rifle Parts

97-120 of 177 Products
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Aim Sports AR5CUB3 Complete Upper Assembly 5.56x45mm NATO 16" Black Nitride Barrel 7075-T6 Aluminum Black Hard Coat Anodized Receiver 15" M-LOK Free-Float Handguard for AR-15

Aim Sports AR5CUB3 Complete Upper Assembly 5.56x45mm NATO 16" Black Nitride Barrel 7075-T6 Aluminum Black Hard Coat Anodized Receiver 15" M-LOK Free-Float Handguard for AR-15

$359 99
In Stock
Sons of Liberty M489UPPER13.7556 M4-89 Upper 556 13.7

Sons of Liberty M489UPPER13.7556 M4-89 Upper 556 13.7

$950 00
In Stock
Only 4 Left!
Sons of Liberty M4L89BSUPPER-14.5-CHF-556 Upper 14.5 556

Sons of Liberty M4L89BSUPPER-14.5-CHF-556 Upper 14.5 556

$1318 79
In Stock
Only 3 Left!
Sons of Liberty M4L89BSUPPER-14.5-CHF-556-HUX Upper 14.5 556

Sons of Liberty M4L89BSUPPER-14.5-CHF-556-HUX Upper 14.5 556

$1318 79
In Stock
Only 2 Left!
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - Kodiak Brown Anodized - APAR700401M7

Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - Kodiak Brown Anodized - APAR700401M7
Out of Stock
Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper wtih 9.3" M-LOK ATLAS S-ONE Handguard - OD Green Anodized - APSL100625

Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper wtih 9.3" M-LOK ATLAS S-ONE Handguard - OD Green Anodized - APSL100625

Out of Stock
Aero Precision M4E1 Threaded 10.5" 5.56 Carbine Complete Upper with 9.3" ATLAS S-ONE, VG6 Epsilon 556, BREACH Charging Handle, 5.56 BCG - Anodized Black - APSL100415

Aero Precision M4E1 Threaded 10.5" 5.56 Carbine Complete Upper with 9.3" ATLAS S-ONE, VG6 Epsilon 556, BREACH Charging Handle, 5.56 BCG - Anodized Black - APSL100415

Out of Stock
Radical Firearms Complete Upper 16" 5.56 M4 Profile w/ 12" FGS Round Rail

Radical Firearms Complete Upper 16" 5.56 M4 Profile w/ 12" FGS Round Rail
Out of Stock
AR-15 Drop In Ready Enhanced Complete Upper w/ 16" M4 223 - 5.56 Barrel, 12" Free Float Keymod Fore End by Riley Defense

AR-15 Drop In Ready Enhanced Complete Upper w/ 16" M4 223 - 5.56 Barrel, 12" Free Float Keymod Fore End by Riley Defense
Out of Stock
AR-15 Drop In Ready Complete Upper w/ Spiral Fluted Stainless Steel 16" Heavy .223 / 5.56 Barrel, 10" Free Float Keymod and SS-TPI Break - by Riley Defense

AR-15 Drop In Ready Complete Upper w/ Spiral Fluted Stainless Steel 16" Heavy .223 / 5.56 Barrel, 10" Free Float Keymod and SS-TPI Break - by Riley Defense
Out of Stock
AR-15 Pistol Kit 5.56 - 7.5 Barrel, Keymod Rail and SBA3 Pistol Brace

AR-15 Pistol Kit 5.56 - 7.5 Barrel, Keymod Rail and SBA3 Pistol Brace

Out of Stock
AR-15 8.5" M4 Profile Barrel, .223/5.56NATO, Parkerized Finish, 1:7 Twist

AR-15 8.5" M4 Profile Barrel, .223/5.56NATO, Parkerized Finish, 1:7 Twist
Out of Stock
Knights 31963 Upper Recver KIT SR15 CQB MOD2 11.5"

Knights 31963 Upper Recver KIT SR15 CQB MOD2 11.5"

Out of Stock
Aero Precision AR15 Complete Upper with No Forward Assist 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR610605M7

Aero Precision AR15 Complete Upper with No Forward Assist 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR610605M7
Out of Stock
Aero Precision M4E1 Special Edition Thunder Ranch 14.5" 5.56 Mid-Length with 12" Atlas R-ONE Complete Upper Receiver - APAR700754M5

Aero Precision M4E1 Special Edition Thunder Ranch 14.5" 5.56 Mid-Length with 12" Atlas R-ONE Complete Upper Receiver - APAR700754M5
Out of Stock
Aero Precision M4E1 Threaded 12.5" 5.56 Carbine Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR700714M30

Aero Precision M4E1 Threaded 12.5" 5.56 Carbine Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR700714M30

Out of Stock
Ballistic Advantage AR-15 5.56x45mm Complete Bolt Carrier Group, Nitride - BAPA100086

Ballistic Advantage AR-15 5.56x45mm Complete Bolt Carrier Group, Nitride - BAPA100086
Out of Stock
Bushmaster 0040006BLK Bravo Zulu Upper 5.56x45mm NATO 16" Black Rec/Barrel with 14" M-LOK Handguard for AR-15

Bushmaster 0040006BLK Bravo Zulu Upper 5.56x45mm NATO 16" Black Rec/Barrel with 14" M-LOK Handguard for AR-15

Out of Stock
Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Out of Stock
Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Out of Stock
Patriot Ordnance Factory Minuteman Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Patriot Brown Receiver 9" M-LOK Handguard Lo Pro DI Gas Block (Mid Length)

Patriot Ordnance Factory Minuteman Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Patriot Brown Receiver 9" M-LOK Handguard Lo Pro DI Gas Block (Mid Length)

Out of Stock
Del-Ton Inc DT1040 Complete Upper Assembly 5.56x45mm NATO 16" Mid Length Chrome Moly Vanadium Barrel 15" M-LOK Handguard 7075-T6 Alum Upper Rec

Del-Ton Inc DT1040 Complete Upper Assembly 5.56x45mm NATO 16" Mid Length Chrome Moly Vanadium Barrel 15" M-LOK Handguard 7075-T6 Alum Upper Rec

Out of Stock
Aero Precision AR15 Complete Upper with No Forward Assist, 11.5" 5.56 Barrel, 9" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR610502M29

Aero Precision AR15 Complete Upper with No Forward Assist, 11.5" 5.56 Barrel, 9" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR610502M29

Out of Stock
Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9.2" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR712112M2

Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9.2" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR712112M2

Out of Stock
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