AR15 Parts

Find everything you need to build, upgrade, or repair your AR-15 at ICB Firearms, located in St. Clair Shores, MI. We carry a full selection of AR parts, including barrels, buffer tubes, BCGs, charging handles, handguards, and trigger assemblies. Whether you’re upgrading your AR rifle for competition or outfitting a home defense build, we have you covered. Pair your components with AR magazines, gun scopes, and gear for the ultimate tactical setup. Be sure to browse the full rifle parts section for other compatible upgrades. Quality parts are essential for dependable performance, and our selection is designed for serious builders and shooters alike. Shop AR-15 parts today and start building with confidence.

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Aero Precision

AR15 Uppers
AERO AR15 ASSEMBLED UPPER BLACK
$15 off
Original price was: $140.00.Current price is: $124.99.
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Aero Precision

AR15 Uppers
AERO AR15 ASSEMBLED UPPER FDE
$15 off
Original price was: $160.00.Current price is: $144.99.
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Aero Precision

AR15 Uppers
AERO CMPLT UPPER 5.56 16″ MOE FDE
$45 off
Original price was: $460.00.Current price is: $414.99.
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Aero Precision

AR15 Uppers
AERO EPC-9 ASSEMBLED UPPER FDE
$20 off
Original price was: $205.00.Current price is: $184.99.
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Aero Precision

AR15 Uppers
AERO EPC-9-T UPPER 9MM 16″ BLK
$60 off
Original price was: $590.00.Current price is: $529.99.
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Aero Precision

AR15 Lowers
AERO M16A4 CLONE COMPLETE LOWER
$40 off
Original price was: $385.00.Current price is: $344.99.
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Aero Precision

AR15 Lowers
AERO M4A1 CLONE COMPLETE LOWER
$35 off
Original price was: $340.00.Current price is: $304.99.
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Aero Precision

AR15 Uppers
AERO M4E1 ASSEMBLED UPPER KODIAK BRN
$15 off
Original price was: $175.00.Current price is: $159.99.
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Aero Precision

AR15 Uppers
AERO M4E1 ASSEMBLED UPPER ODG
$15 off
Original price was: $175.00.Current price is: $159.99.
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Aero Precision

AR15 Lowers
AERO M4E1 STRIPPED LOWER RECEIVER FDE
$15 off
Original price was: $175.00.Current price is: $159.99.
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Aero Precision

AR15 Uppers
AERO M4E1-T UPPER 308WIN 16″ FDE
$80 off
Original price was: $820.00.Current price is: $739.99.
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Aero Precision

AR15 Uppers
AERO M4E1-T UPPER 5.56 16″ BLK
$65 off
Original price was: $655.00.Current price is: $589.99.
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Aero Precision

AR15 Uppers
AERO M4E1-T UPPER 5.56 16″ FDE
$70 off
Original price was: $695.00.Current price is: $624.99.
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Aero Precision

AR15 Parts
AERO M5 15 ATLAS R-ONE MLOK HANDGUARD FDE
$0 off
Original price was: $245.00.Current price is: $244.99.
Out of stock. Want to be notified?
Aero Precision

AR15 Lowers
Aero Precision Pro Lower Receiver M4E1 Compatible w/
$60 off
Original price was: $329.99.Current price is: $269.99.
Out of stock. Want to be notified?
Aero Precision

AR15 Lowers
Aero Precision Pro Lower Receiver M4E1 Compatible w/
$60 off
Original price was: $329.99.Current price is: $269.99.
Out of stock. Want to be notified?