AR15 Upper Parts and Kits | Aerospace Arms

Purchase upper parts kits or replacement parts for your upper receiver.

LBE Unlimited

LBE Unlimited, AR-15 Ejection Port Cover Spring, Made from 302 Stainless Steel, Pack of 20

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Now: $12.99

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Bastion

Bastion Psalm 23:4, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

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Bastion

Bastion Psalm 144:1, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

Out of stock
Bastion

Bastion 300AAC BLACKOUT, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

Out of stock
Bastion

Bastion, AR-15 Ejection Port Dust Cover Assembly, Blank, Black

Retail: $14.99

Was:

Now: $13.99

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Aero Precision

Aero Precision AR15 ATLAS Taper Lock Kit

Retail: $30.00

Was:

Now: $26.99

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Aero Precision

Aero Precision AR15 Handguard Screw Pack - T15 (8 Screws)

Retail: $9.00

Was:

Now: $7.99

Out of stock
2A Armament

2A Armament, Builders Series, Aluminum Billet Port Door, AR15 Rifles, Anodize Black Finish

Retail: $29.99

Was:

Now: $28.99

Out of stock
Aero Precision

Aero Precision AR15 Crush Washer

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Now: $3.29

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Aero Precision

Aero Precision Forward Assist Assembly Kit

Retail: $15.00

Was:

Now: $13.99

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Aero Precision

Aero Precision AR-15 Complete Upper Parts Kit

Retail: $24.99

Was:

Now: $22.99

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Luth-AR

Luth-AR, Forward Assist Assembly

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Was:

Now: $13.95

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Luth-AR

Luth-AR, A3 Upper Receiver Parts Kit

Retail: $16.95

Was:

Now: $15.95

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Bastion

Bastion Molon Labe Helmet, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

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CMMG

CMMG, Ejection Port Cover Kit, Mk3, Ejection Port, Rod, and Spring, Black Finish

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Now: $14.95

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Bastion

Bastion USA American Flag, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

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Bastion

Bastion Don't Tread On Me, AR-15 Ejection Port Dust Cover Assembly

Retail: $16.99

Was:

Now: $15.99

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Rise Armament

Rise Armament, Standard Upper Parts Kit

Retail: $29.99

Was:

Now: $28.49

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Luth-AR

Luth-AR, Ejection Port Cover Assembly

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Was:

Now: $6.99

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CMMG

CMMG, Forward Assist Kit, Includes Forward Assist Assembly, Spring, and Installation Pin, Black Finish

Retail: $16.95

Was:

Now: $15.95

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Smith & Wesson

Smith & Wesson M&P AR-15 Complete Upper Parts Kit

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Was:

Now: $20.99

Out of stock
LBE Unlimited

LBE Unlimited, Ejection Port Cover Kit, For AR15

Retail: $12.99

Was:

Now: $10.99

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LBE Unlimited

LBE Unlimited, Complete Forward Assist Assembly, For AR15

Retail: $16.99

Was:

Now: $14.99

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Spike's Tactical

Spike's Tactical Forward Assist Assembly for AR Rifles

Retail: $12.00

Was:

Now: $10.99

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LBE Unlimited

LBE Unlimited, AR-15 Ejection Port Cover Spring, Made from 302 Stainless Steel, Pack of 20

This is a 20-Pack of LBE AR-15 ejection port cover springs. Fits AR-15 302 Stainless Steel Made in the USA

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Was:

Now: $12.99

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Bastion

Bastion Psalm 23:4, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

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Bastion

Bastion Psalm 144:1, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

Out of stock
Bastion

Bastion 300AAC BLACKOUT, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

Out of stock
Bastion

Bastion, AR-15 Ejection Port Dust Cover Assembly, Blank, Black

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $14.99

Was:

Now: $13.99

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Aero Precision

Aero Precision AR15 ATLAS Taper Lock Kit

This is a replacement part for your AR15 ATLAS Handguard. All of Aero Precision's ATLAS Handguards come with this already in the packaging.Includes: ATLAS Clamp Screw ATLAS Taper Lock Right Side ATLAS Taper Lock Left Side

Retail: $30.00

Was:

Now: $26.99

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Aero Precision

Aero Precision AR15 Handguard Screw Pack - T15 (8 Screws)

Spare screws for our M4E1/AR15 Enhanced Series Upper Receiver and Handguard.Includes 8 - T15 Screws *Note: This product is already included with Aero Precision's AR15 Handguards. It is not necessary to be purchased separately. This individual...

Retail: $9.00

Was:

Now: $7.99

Out of stock
2A Armament

2A Armament, Builders Series, Aluminum Billet Port Door, AR15 Rifles, Anodize Black Finish

Upgrade from your MILSPEC steel port door to the 2A Armament AR15 Aluminium Billet Port Door. Features and Specifications: Made in Boise, ID from USA sourced 7075 Aluminum 0.4 oz assembled Type III Class 2 Hard Anodize

Retail: $29.99

Was:

Now: $28.99

Out of stock
Aero Precision

Aero Precision AR15 Crush Washer

This individual product is available for customers who have lost or damaged their existing crush washer. Features and Specifications: Used behind flash hider on your AR15 Phosphate coated Made in the USA

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Now: $3.29

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Aero Precision

Aero Precision Forward Assist Assembly Kit

This Forward Assist Assembly Kit fits both AR15 and M5 .308 Upper Receivers Package Includes: Forward Assist Assembly Forward Assist Spring Forward Assist Roll Pin

Retail: $15.00

Was:

Now: $13.99

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Aero Precision

Aero Precision AR-15 Complete Upper Parts Kit

Aero Precision upper parts kit includes the parts you need to assemble your AR15 Upper Receiver. Includes: Forward Assist Assembly Forward Assist Spring Forward Assist Roll Pin Ejection Port Cover Door Ejection Port Cover Rod with...

Retail: $24.99

Was:

Now: $22.99

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Luth-AR

Luth-AR, Forward Assist Assembly

Forward assist assembly for AR-15. Features and Specifications: Fits AR-15 Forward Assist Includes Spring and Pin

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Now: $13.95

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Luth-AR

Luth-AR, A3 Upper Receiver Parts Kit

The A3 Upper Receiver Parts Kit for AR-15 includes the ejection port cover, ejection port rod, ejection port C-clip, ejection port spring, forward assist button, forward assist spring and forward assist pin. Package Includes: Fits AR-15 Pattern...

Retail: $16.95

Was:

Now: $15.95

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Bastion

Bastion Molon Labe Helmet, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

Add to Cart
CMMG

CMMG, Ejection Port Cover Kit, Mk3, Ejection Port, Rod, and Spring, Black Finish

Includes Mk3 .308 ejection port cover, rod, and spring.

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Was:

Now: $14.95

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Bastion

Bastion USA American Flag, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

Add to Cart
Bastion

Bastion Don't Tread On Me, AR-15 Ejection Port Dust Cover Assembly

High quality components and precise manufacturing make Bastion parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Fits Standard...

Retail: $16.99

Was:

Now: $15.99

Add to Cart
Rise Armament

Rise Armament, Standard Upper Parts Kit

High quality components and precise manufacturing make Rise Armament parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on. Kit is...

Retail: $29.99

Was:

Now: $28.49

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Luth-AR

Luth-AR, Ejection Port Cover Assembly

Ejection Port Cover Assembly for AR-15. Package Includes: Ejection Port Door Spring Rod with C-clip

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Now: $6.99

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CMMG

CMMG, Forward Assist Kit, Includes Forward Assist Assembly, Spring, and Installation Pin, Black Finish

CMMG's AR15/.308 Forward Assist Kit is perfect for completing or repairing your AR upper receiver (fits most .308/AR10 upper receivers). Package Includes: Forward assist assembly Forward assist plunger spring Roll pin (.093"x.625") *All the...

Retail: $16.95

Was:

Now: $15.95

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Smith & Wesson

Smith & Wesson M&P AR-15 Complete Upper Parts Kit

The M&P® Upper Parts Kit includes all the parts you need to finish your stripped upper receiver. Kit Contains: FORWARD ASSIST – ASSEMBLED FORWARD ASSIST SPRING FORWARD ASSIST ROLL PIN EJECTION PORT COVER EJECTION PORT...

Retail:

Was:

Now: $20.99

Out of stock
LBE Unlimited

LBE Unlimited, Ejection Port Cover Kit, For AR15

The LBE AR-15 ejection port cover kit includes the port door, rod with C-clip and spring. Made in the USA. Fits AR-15 Ejection Port Cover Made in the USA

Retail: $12.99

Was:

Now: $10.99

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LBE Unlimited

LBE Unlimited, Complete Forward Assist Assembly, For AR15

The LBE forward assist assembly includes the forward assist, spring and roll pin. Made in the USA. Fits AR-15 Forward Assist Made in the USA

Retail: $16.99

Was:

Now: $14.99

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Spike's Tactical

Spike's Tactical Forward Assist Assembly for AR Rifles

The Spike's Tactical Forward Assist Assembly Kit includes the pieces you need to install a functional forward assist into your stripped upper receiver. Mil-Spec Forward Assist Retention Pin Forward Assist Spring

Retail: $12.00

Was:

Now: $10.99

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