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AR15 Upper Receiver Replacement Parts

Complete Uppers

Barreled Uppers

Upper Build Kit

UPPER RECEIVERS

CHARGING HANDLES

HARDWARE, DOORS & SMALL PARTS

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STAG 15 Retro 20" Upper With Chrome Phosphate Barrel In 5.56mm

MSRP: $649.99

SALE PRICE: $583.95

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Andro Corp 16" 556 Upper Receiver - BLK | A2 | M4 Handguard | Without BCG & CH

MSRP: $382.00

SALE PRICE: $324.70

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Andro Corp 10.3" 556 NATO Upper Receiver - BLK | A2 | 9.25" M-LOK | Without BCG & CH

MSRP: $320.00

SALE PRICE: $272.00

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Andro Corp 16" 556 NATO Upper Receiver - BLK | A2 | 15" M-LOK | Without BCG & CH

MSRP: $332.00

SALE PRICE: $282.20

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Rifle Build Kit - 5.56 | BN Complete 16" Ambi Side Charging Upper Receiver | BN LBK | CA15 100% AR Billet Lower (FFL REQ.)

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STAG 15 Retro 20" Upper With Chrome Phosphate Barrel In 5.56mm - Left-handed

MSRP: $649.99

SALE PRICE: $589.95

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BN Complete Lightweight 16" 5.56 Ambi Side Charging Upper Receiver | A2 | 15" OPT-X M-LOK | With BCG & CH

MSRP: $468.95

SALE PRICE: $298.95

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BN Complete 16" 5.56 Ambi Side Charging Upper Receiver | A2 | 15" OPT-X M-LOK | With BCG & CH

MSRP: $462.95

SALE PRICE: $288.95

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RTB Upper Build Kit 16" 5.56 Upper Receiver - Tungsten | A2 | 13.5" M-LOK | With BCG & CH

MSRP: $539.95

SALE PRICE: $347.95

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RTB Upper Build Kit 16" 5.56 Upper Receiver - Sniper Gray | A2 | 13.5" M-LOK | With BCG & CH

MSRP: $544.95

SALE PRICE: $354.95

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RTB Upper Build Kit 16" 5.56 Upper Receiver - FDE | A2 | 13.5" M-LOK | With BCG & CH

MSRP: $523.95

SALE PRICE: $342.95

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RTB Upper Build Kit 16" 5.56 Upper Receiver - Black | A2 | 15" M-LOK | Mid Length | With BCG & CH

MSRP: $519.95

SALE PRICE: $320.95

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RTB Upper Build Kit 16" 5.56 Upper Receiver - Black | A2 | 13.5" M-LOK | With BCG & CH

MSRP: $523.95

SALE PRICE: $312.95

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RTB Upper Build Kit 10.5" 5.56 Upper Receiver - Tungsten | FLASH CAN | 12" M-LOK | With BCG & CH

MSRP: $534.95

SALE PRICE: $352.95

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RTB Upper Build Kit 10.5" 5.56 - Sniper Gray | FLASH CAN | 12" M-LOK | With BCG & CH

MSRP: $540.95

SALE PRICE: $359.95

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RTB Upper Build Kit 10.5" 5.56 Upper Receiver - BB | A2 | 9" M-LOK | With BCG & CH

MSRP: $525.95

SALE PRICE: $339.95

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BG Upper Build Kit 16" 5.56 - Black | A2 | 12" M-LOK | With BCG & CH

MSRP: $429.95

SALE PRICE: $284.95

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BG 16" 5.56 Upper Receiver | A2 | 15" Quad M-LOK Slant Cut| Without BCG & CH

MSRP: $400.95

SALE PRICE: $197.95

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BG Complete 16" 5.56 Upper Receiver | A2 | 15" Quad M-LOK | With BCG & CH

MSRP: $450.95

SALE PRICE: $279.95

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RTB 10.5" 5.56 Upper Receiver - Burnt Bronze | A2| 9" M-LOK | Without BCG & CH

MSRP: $475.95

SALE PRICE: $284.95

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RTB Complete 10.5" 5.56 Upper Receiver - Burnt Bronze | A2 | 9" M-LOK | With BCG & CH

MSRP: $530.95

SALE PRICE: $393.95

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Vortex Razor HD Gen III 1-10x24 FFP EBR-9 MRAD with Free BG Complete 16" 5.56 Upper Receiver - Black

MSRP: $3,599.99

SALE PRICE: $2,549.95

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Pistol Build Kit - 5.56 | 7.5" Complete Upper Receiver w/ A2| MF Stabilizer | TS LPK

MSRP: $679.90

SALE PRICE: $389.95

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Upper Build Kit 7.5" 5.56 Pistol - Black | FLASH CAN | 9.25" M-LOK | With BCG & CH

MSRP: $524.95

SALE PRICE: $313.95

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Upper Build Kit 7.5" 5.56 Pistol - Black | A2 | 7.25" M-LOK | With BCG & CH

MSRP: $514.95

SALE PRICE: $267.95

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Pistol Build Kit - 5.56 | 7.5" Complete Upper Receiver w/Flash Can| MF Stabilizer | TS LPK

MSRP: $689.90

SALE PRICE: $469.95

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Ballistic Advantage 10.3" Hanson 5.56 Upper Receiver | 9" M-LOK ATLAS R-ONE | Without BCG & CH

MSRP: $484.00

SALE PRICE: $339.95

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Complete 16" 5.56 Carbine Upper Receiver - FDE | 15" M-LOK | With BCG & CH

MSRP: $472.95

SALE PRICE: $315.95

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16" 5.56 Carbine Upper Receiver - Sniper Grey | A2 | 15" M-LOK | Without BCG & CH

MSRP: $419.95

SALE PRICE: $229.95

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Bushmaster Complete M4 Patrolman's Upper - 16" Upper 5.56 NATO - Flat Top I6 | With BCG & CH

MSRP: $564.99

SALE PRICE: $540.95

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Complete 7.5" 5.56 Pistol Upper Receiver - Black | FLASH CAN | 9.25" M-LOK | With BCG & CH

MSRP: $479.95

SALE PRICE: $326.95

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Complete 7.5" 5.56 Pistol Upper Receiver - Black | A2 | 7.25" M-LOK | With BCG & CH

MSRP: $450.95

SALE PRICE: $279.95

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Ballistic Advantage 5.56 11.5" Carb Barrel + Matching Headspace Bolt Kit

MSRP: $240.00

SALE PRICE: $214.95

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Ramlin AR15 16" Mid Complete Upper Receiver Build Kit - 15" M-LOK Handguard

MSRP: $550.00

SALE PRICE: $376.95

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Ramlin AR15 16" Mid Complete Upper Receiver Build Kit - 12" M-LOK Handguard

MSRP: $550.00

SALE PRICE: $350.95

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Ramlin AR15 11.5" Carb Complete Upper Receiver Build Kit - 10" M-LOK Handguard

MSRP: $550.00

SALE PRICE: $338.95

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Bear Creek 7.5" Barrel, Pistol 5.56 + Matching Headspace Bolt Kit

MSRP: $237.99

SALE PRICE: $178.99

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Bear Creek 16" M4 Mid-Length Barrel 5.56 + Matching Headspace Bolt Kit

MSRP: $247.99

SALE PRICE: $189.99

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Bear Creek 10.5" Barrel Carb 5.56 + Matching Headspace Bolt Kit

MSRP: $237.99

SALE PRICE: $180.00

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Ballistic Advantage 16" 5.56 Hanson Mid Barrel + Matching Headspace Bolt Kit

MSRP: $315.00

SALE PRICE: $275.00

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Ballistic Advantage 5.56 10.5" Carb Barrel + Matching Headspace Bolt Kit

MSRP: $235.00

SALE PRICE: $210.00

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Bear Creek 16" M4 Carb Barrel 5.56 + Matching Headspace Bolt Kit

MSRP: $247.99

SALE PRICE: $189.99

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Ballistic Advantage 12.3" 5.56 Hanson Carb Barrel + Matching Headspace Bolt Kit

MSRP: $300.00

SALE PRICE: $270.00

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Barrel Kit AR15 / M4 7.5" Pistol Length With Gas System and Sights

MSRP: $261.95

SALE PRICE: $161.95

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Barrel Kit AR15 / M4 16" Carbine Length With Gas System and Sights

MSRP: $271.95

SALE PRICE: $171.95

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Barrel Kit AR15 / M4 10.5" Carbine Length With Gas System and Sights

MSRP: $266.95

SALE PRICE: $166.95

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Aero Precision M4E1 Upper Receiver, 12.5" 5.56 Barrel, 12" M-LOK ATLAS S-ONE | Without BCG & CH

MSRP:

MSRP: $484.99

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Aero Precision M4E1 Upper Receiver, 14.5" 5.56 Mid Barrel, ATLAS R-ONE 12" M-LOK HG | Without BCG & CH

MSRP:

MSRP: $519.99

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Aero Precision M4E1 Upper Receiver, 16" 5.56 Carbine Barrel, EM-15 HG Gen 2 | Without BCG & CH

MSRP:

MSRP: $509.99

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Aero Precision AR15 Upper Receiver, 10.5" 5.56 Carbine Barrel w/ Pinned FSB, MOE M-LOK Carbine Handguard | Without BCG & CH

MSRP:

MSRP: $319.99

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Aero Precision M4E1 Upper Receiver, 16" 5.56 Mid-Length Barrel, ATLAS R-ONE 15" M-LOK HG | Without BCG & CH

MSRP:

MSRP: $509.99

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Aero Precision M4E1 Upper Receiver, 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS S-ONE | Without BCG & CH

MSRP:

MSRP: $509.99

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Ghost Firearms Elite - 16" Upper 5.56 NATO Barrel w/ 14" M-LOK Rail - Tungsten Gray | Without BCG & CH

MSRP:

MSRP: $348.95

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Ghost Firearms Elite - 16" Upper 5.56 NATO Barrel w/ 14" M-LOK Rail - FDE | Without BCG & CH

MSRP:

MSRP: $348.95

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Ghost Firearms Elite - 16" Upper 5.56 NATO Barrel w/ 14" M-LOK Rail - Blue Titanium | Without BCG & CH

MSRP:

MSRP: $348.95

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Ghost Firearms Elite - 16" Upper 5.56 NATO Barrel w/ 14" M-LOK Rail - Burnt Bronze | Without BCG & CH

MSRP:

MSRP: $348.95

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Ghost Firearms Elite - 16" Upper 5.56 NATO Barrel w/ 14" M-LOK Rail - Black | Without BCG & CH

MSRP:

MSRP: $348.95

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Anderson Complete Upper - 16" Upper 5.56 NATO - Low Profile Gas Block | With BCG & CH

MSRP:

MSRP: $395.19

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Aero Precision M4E1 Upper Receiver, 10.5" 5.56 , 9" M-LOK ATLAS R-ONE | Without BCG & CH

MSRP:

MSRP: $459.99

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Aero Precision M4E1 Upper Receiver, 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS S-ONE - FDE | Without BCG & CH

MSRP:

MSRP: $559.99

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We carry everything you need to upgrade your AR15 upper receiver with the best replacement parts from top brands including Spike’s Tactical, Rock River Arms, BCM and more. Our selection of mil-spec upper receiver parts and hardware includes assembly and installation kits, as well as custom ejection port dust covers. We have the most versatile ambidextrous charging handles, gas system parts including gas blocks and tubes, complete upper receivers and everything else you may need to upgrade or repair your AR15 upper receiver assembly. All of our replacement AR15 upper receiver parts are made from the most durable materials and are guaranteed to fit with no additional machining.

All of our AR15 upper receiver parts and AR15 hardware are made from steel, aluminum and other durable materials. Buy now to enjoy our everyday low prices and fast shipping on all orders or contact us for more information and our experts will help you find everything you need. We also offer a Cerakoting service for several of our popular upper receivers.