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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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3 PACK | Black Nitride Gas Block Low Profile - .750

MSRP: $89.85

SALE PRICE: $44.55

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RTB Complete 9" .22LR Lightweight Upper Receiver - Black | A2 | 7" M-LOK | with BCG & CH

MSRP: $540.95 - $560.95

MSRP: $560.95

Sale Price: $331.96 - $362.36

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Rifle Build Kit - BG Complete 16" Upper Receiver | 12" Slant Cut HG |MF 6-Positon Stock Kit | BN LPK

MSRP:

MSRP:

Sale Price: $344.95 - $354.95

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5 Pack | Standard AR15/M4 5.56 Charging Handle - 7075

MSRP: $100.00

SALE PRICE: $78.95

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Billet DPMS Pattern DPMS Pattern .308 / AR10 Anodized Stripped Upper Receiver

MSRP: $149.99

SALE PRICE: $94.95

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BG Complete 16" .22LR Pencil Upper Receiver | A2 | 15" BX Series M-LOK| with BCG & CH

MSRP:

MSRP:

Sale Price: $347.95 - $380.95

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BG 10.3" 5.56 Upper Receiver - Black | A2 | 9" M-LOK | Without BCG & CH

MSRP: $391.95

SALE PRICE: $183.95

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BG 7.5" 5.56 Upper Receiver - Black | A2 | 7" M-LOK | Without BCG & CH

MSRP: $389.95

SALE PRICE: $178.95

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BG Complete 7.5" 5.56 Upper Receiver - Black | A2 | 7" M-LOK | With BCG & CH

MSRP: $439.95

SALE PRICE: $260.95

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Upper Build Kit 9mm Slick Side Upper Receiver Combo + 9mm Barrel 1/2 x 36

MSRP:

MSRP: $164.95

Sale Price: $104.95 - $109.95

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RTB 16" 5.56 Lightweight Upper Receiver - Black | A2 | 15" M-LOK | Without BCG & CH

MSRP: $480.95

SALE PRICE: $235.96

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RTB Complete 16" 5.56 Lightweight Upper Receiver - Black | A2 | 15" M-LOK | With BCG & CH

MSRP: $535.95

SALE PRICE: $323.16

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RTB 16" 5.56 Lightweight Upper Receiver - Black | A2 | 13.5" M-LOK | Without BCG & CH

MSRP: $480.95

SALE PRICE: $235.96

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

MSRP: $535.95

SALE PRICE: $322.36

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RTB Complete 16" 5.56 Lightweight Upper Receiver - Black | A2 | 12" M-LOK | With BCG & CH

MSRP: $533.95

SALE PRICE: $319.16

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RTB 16" 5.56 Lightweight Upper Receiver - Black | A2 | 12" M-LOK | Without BCG & CH

MSRP: $477.95

SALE PRICE: $231.96

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

MSRP: $391.95

SALE PRICE: $182.95

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BG Complete 16" 9mm Upper Receiver - BLK | A2 | 12" M-LOK HG | Pistol Caliber | With BCG & CH

MSRP: $452.95

SALE PRICE: $282.95

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BG Complete 16" 9mm Upper Receiver - BLK | A2 | 15" M-LOK HG | Pistol Caliber | With BCG & CH

MSRP: $452.95

SALE PRICE: $282.95

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

MSRP: $391.95

SALE PRICE: $182.95

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RTB 16" 9MM Upper Receiver - Black | A1 | 15" M-LOK | Without BCG & CH

MSRP: $462.95

SALE PRICE: $207.16

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RTB Complete 16" 9MM Upper Receiver - Black | A2 | 15" M-LOK | With BCG & CH

MSRP: $528.95

SALE PRICE: $311.96

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Anderson Charging Handle Standard Latch

MSRP: $14.95

SALE PRICE: $8.96

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Pistol Build Kit - BG Complete 10.5" 5.56 Upper Receiver | 9" M-LOK HG |Pistol Brace & Buffer Tube Kit | BN LPKv

MSRP: $499.95

SALE PRICE: $299.95

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

MSRP: $457.95

SALE PRICE: $200.76

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RTB 10.5" 5.56 Upper Receiver - Black | FLASH CAN | 12" M-LOK | Without BCG & CH

MSRP: $470.95

SALE PRICE: $219.96

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BG 10.5" 5.56 Upper Receiver - Black | A2 | 9" M-LOK | Without BCG & CH

MSRP: $391.95

SALE PRICE: $183.95

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BG Complete 10.5" 5.56 Upper Receiver - Black | A2 | 9" M-LOK | With BCG & CH

MSRP: $441.95

SALE PRICE: $265.95

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RTB Complete 10.5" 5.56 Upper Receiver - Black | FLASH CAN | 12" M-LOK | With BCG & CH

MSRP: $525.95

SALE PRICE: $307.16

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RCA Adjustable Gas Key

MSRP: $49.99

SALE PRICE: $35.96

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Pistol Build Kit - BG Complete 10.5" 300BLK Upper Receiver | 9" M-LOK HG | SB Brace | BN LPK

MSRP: $540.95

SALE PRICE: $426.95

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

MSRP: $450.95

SALE PRICE: $252.95

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AO BCG + Upper Build Kit with Mil Spec Charging Handle

MSRP: $320.00

SALE PRICE: $148.46

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RTB 16" 5.56 Upper Receiver - Black | A2 | 15" M-LOK | Mid Length | Without BCG & CH

MSRP: $475.95

SALE PRICE: $227.96

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

MSRP: $530.95

SALE PRICE: $315.16

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RTB Complete 16" 5.56 Upper Receiver - Black | A2 | 13.5" M-LOK | Mid Length | With BCG & CH

MSRP: $526.95

SALE PRICE: $309.56

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RTB 16" 5.56 Upper Receiver - Black | A2 | 13.5" M-LOK | Mid Length | Without BCG & CH

MSRP: $471.95

SALE PRICE: $222.36

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RTB Complete 16" 5.56 Upper Receiver - Black | A2 | 12" M-LOK | Mid Length | With BCG & CH

MSRP: $528.95

SALE PRICE: $311.16

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RTB 16" 5.56 Upper Receiver - Black | A2 | 12" M-LOK | Mid Length | Without BCG & CH

MSRP: $472.95

SALE PRICE: $223.96

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Tactical Machining AR15 Billet Stripped Upper / Lower Receiver Set - Model 18X

MSRP: $300.00

SALE PRICE: $154.95

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BG 5" 5.56 1:5 Twist Upper Receiver - Black | A2 | 4.25" M-LOK + Handstop | Without BCG & CH

MSRP: $389.95

SALE PRICE: $179.95

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BG Complete 5" 5.56 1:5 Twist Upper Receiver - Black | A2 | 4.25" M-LOK + Handstop | with BCG & CH

MSRP: $439.95

SALE PRICE: $261.95

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BG Complete 5" 5.56 1:5 Twist Upper Receiver - Black | Flash Can | 4.25" M-LOK | With BCG & CH

MSRP: $445.95

SALE PRICE: $271.95

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BG Complete 5" 5.56 1:5 Twist Upper Receiver - Black | A2 | 4.25" M-LOK | With BCG & CH

MSRP: $439.95

SALE PRICE: $261.95

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Rifle Build Kit - 5.56 | BG Complete 16" Upper Receiver | 12" M-LOK HG |M4 6-Positon Stock Kit | BN LPK

MSRP: $608.95

SALE PRICE: $339.95

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A2 Stripped Raw Upper Receiver

MSRP: $195.99

SALE PRICE: $84.96

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5 PACK | Black Nitride Gas Block (.625) Low Profile - .625

MSRP: $149.75

SALE PRICE: $74.95

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BG 16" 5.56 Upper Receiver | A2 | 12" M-LOK | Without BCG & CH

MSRP: $399.95

SALE PRICE: $196.95

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Rifle Build Kit - 5.56 | RTB Complete 16" Upper Receiver | 12" M-LOK HG |M4 6-Positon Stock Kit | LPK

MSRP: $659.75

SALE PRICE: $444.95

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Rifle Build Kit - 5.56 | RTB Complete 16" Upper Receiver | M4 6-Positon Stock Kit | TS LPK

MSRP: $659.75

SALE PRICE: $449.95

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RTB 16" 5.56 Upper Receiver - Black | A2 | 12" M-LOK | Without BCG & CH

MSRP: $469.95

SALE PRICE: $219.16

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RTB 16" 5.56 Upper Receiver - Black | A2 | 13.5" M-LOK | Without BCG & CH

MSRP: $471.95

SALE PRICE: $222.36

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Rifle Build Kit - 5.56 | RTB Complete 16" Upper Receiver | M4 6-Positon Stock Kit | BN LPK

MSRP: $649.75

SALE PRICE: $444.95

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RTB 16" 5.56 Upper Receiver -Black | A2 | 15" M-LOK | Without BCG & CH

MSRP: $471.95

SALE PRICE: $223.16

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BYO 16" 5.56 Upper Receiver - Assembly Available

MSRP:

MSRP: $339.95

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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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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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3 PACK | RTB 9mm / 22LR / .45 Slick Side Upper Receiver - Black

MSRP: $300.00

SALE PRICE: $168.95

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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 - Tungsten | A2 | 12" M-LOK | With BCG & CH

MSRP: $546.95

SALE PRICE: $345.95

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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.