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AR15 Upper Receiver Replacement Parts

Complete Uppers

Barreled Uppers

Upper Build Kit

UPPER RECEIVERS

CHARGING HANDLES

HARDWARE, DOORS & SMALL PARTS

GAS SYSTEM PARTS

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*BLEM* Seekins Precision Select Adjustable Gas Block - .750

MSRP: $119.00

SALE PRICE: $85.95

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DB 4.5" 9mm Barrel + 9mm Slick Side Upper Receiver Combo

MSRP: $220.00

SALE PRICE: $101.95

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BLEM Spikes Tactical Micro Gas Block (.625) Low Profile

MSRP: $29.95

SALE PRICE: $15.95

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Aero Precision AR15 BREACH Ambi Charging Handle w/ Large Lever - Tan

MSRP:

MSRP: $79.99

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BLEM Lightweight Adjustable Gas Block - Select Size

MSRP: $59.99

SALE PRICE: $19.95

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Blem - Clearance - AR10 DPMS Upper Receiver

MSRP: $109.99

SALE PRICE: $64.95

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BYO 7.5" 5.56 Pistol Upper Receiver - Assembly Available

MSRP: $489.95

SALE PRICE: $340.95

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16" 9mm Upper Receiver - FDE | A2 | 12" M-LOK Slant Cut HG | Pistol Caliber | Without BCG & CH

MSRP: $415.95

SALE PRICE: $222.95

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16" 9mm Upper Receiver - BLK + FDE | A2 | 12" M-LOK Slant Cut HG | Pistol Caliber | Without BCG & CH

MSRP: $408.95

SALE PRICE: $210.95

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16" 9mm Upper Receiver - FDE | A2 | 15" M-LOK HG | Pistol Caliber | Without BCG & CH

MSRP: $408.95

SALE PRICE: $210.95

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16" 9mm Upper Receiver - BLK + FDE | A2 | 15" M-LOK HG | Pistol Caliber | Without BCG & CH

MSRP: $401.95

SALE PRICE: $199.95

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AR-9 4.5" Complete Upper Receiver Build Kit - 4.25" M-LOK Handguard

MSRP: $523.88

SALE PRICE: $301.95

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Aero Precision EPC-9 Threaded Upper Receiver w/ LRBHO - Anodized Black

MSRP:

MSRP: $134.99

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Spike's Tactical Stripped Lower / Upper Set - Spider Logo - Grey

MSRP: $260.00

SALE PRICE: $234.00

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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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BLEM - Anderson Anodized M4 Upper Receiver - Stripped

MSRP: $59.95

SALE PRICE: $49.95

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EZ Pistol Kit - Blem Barreled 10.5" 5.56 Pistol | SB Tactical Brace | Pistol Buffer Tube Kit | Pick A Pistol Brace

MSRP: $356.95

SALE PRICE: $322.95

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Complete 4.5" 9MM Pistol Upper Receiver - Black | FLASH CAN | 5.5" M-LOK Slant Cut | With BCG & CH

MSRP: $451.95

SALE PRICE: $280.95

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4.5" 9mm Upper Receiver -Black | FLASH CAN | 5.5" M-LOK Slant Cut | Without BCG & CH

MSRP: $384.95

SALE PRICE: $172.95

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BCG Upper Build Kit - Lightweight Black Nitride Bolt Carrier Group with Blemished Anodized Upper Receiver and Mil Spec Charging Handle

MSRP: $259.00

SALE PRICE: $167.95

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Pistol Build Kit - 5.56 | 7.5" Complete Upper Receiver w/Flash Can| Shockwave Blade | XTS LPK

MSRP: $689.90

SALE PRICE: $429.95

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Pistol Build Kit - 5.56 | 7.5" Complete Upper Receiver | Shockwave Blade | XTS LPK

MSRP: $689.90

SALE PRICE: $351.95

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BCG Upper Build Kit - M16 Black Nitride Bolt Carrier Group with Blemished Anodized Upper Receiver and Mil Spec Charging Handle

MSRP: $244.00

SALE PRICE: $128.95

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M4 Flat Top BLEM Upper Receiver - with 5.56 Black Nitride Bolt Carrier Group

MSRP: $230.00

SALE PRICE: $124.95

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M4 Flat Top Upper Receiver - Stripped BLEM

MSRP: $79.95

SALE PRICE: $33.95

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RTB 9mm / 22LR True Slick Side Upper Receiver - Sniper Grey

MSRP: $179.95

SALE PRICE: $89.95

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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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10.5" 5.56 Pistol Upper Receiver - FDE | A2 | 9" M-LOK | Without BCG & CH

MSRP: $404.95

SALE PRICE: $204.95

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Slick Side M4 Upper Receiver with Port Door - T marks

MSRP: $129.95

SALE PRICE: $79.95

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Complete 7.5" 5.56 Pistol Upper Receiver - FDE | FLASH CAN | 9" M-LOK | With BCG & CH

MSRP: $466.95

SALE PRICE: $306.95

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Breek Arms WARHAMMER Mod2 308 AR / AR-10 Ambidextrous Charging Handle

MSRP: $74.99

SALE PRICE: $59.95

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RTB BCG Upper Build Kit - RTB M16 Black Nitride Bolt Carrier Group with Anodized Upper Receiver and Mil Spec Charging Handle

MSRP: $313.98

SALE PRICE: $127.95

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.308 / AR 10 Ejection Port Door Assembly

MSRP: $14.95

SALE PRICE: $8.95

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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 6" 300 BLK Pistol Upper Receiver - Black | FLASH CAN | 7.25" M-LOK | With BCG & CH

MSRP: $499.95

SALE PRICE: $374.95

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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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AR10 / .308 Stripped Upper Receiver Raw High-Profile - Armalite Pattern

MSRP: $139.99

SALE PRICE: $59.95

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AR10 / .308 Charging Handle AMBI/STD - Blem

MSRP: $30.00

SALE PRICE: $12.00

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ODIN Works AR-15 XCH Complete Extended Charging Handle - Orange

MSRP: $45.00

SALE PRICE: $42.75

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ODIN Works AR-15 XCH Complete Extended Charging Handle - Tan

MSRP: $45.00

SALE PRICE: $42.75

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ODIN Works AR-15 XCH Complete Extended Charging Handle - Red

MSRP: $45.00

SALE PRICE: $42.75

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ODIN Works AR-10 XCH Complete Extended Charging Handle - Black

MSRP: $55.00

SALE PRICE: $52.25

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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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Right To Bear 6" Pistol Length Barrel 300 BLK + Matching Headspace Bolt Kit

MSRP: $240.00

SALE PRICE: $181.95

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Ballistic Advantage 10.3" Hanson Barrel 300 BLK + Matching Headspace Bolt Kit

MSRP: $305.00

SALE PRICE: $275.00

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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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Ramlin AR15 7.5" Pistol Complete Upper Receiver Build Kit With 7 Inch M-LOK Handguard

MSRP: $550.00

SALE PRICE: $298.95

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Heavy Blem - Clearance - AR15 Upper Receiver

MSRP: $40.00

SALE PRICE: $39.95

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Scrapped Pile Grab Bag - 3x Port Doors Heavy Blem (3 pc)

MSRP:

MSRP: $8.95

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Heavy Blem - Clearance - 9MM / 22LR Upper Receiver

MSRP:

MSRP: $44.00

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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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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.