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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Rock River Arms

AR15 Uppers
RRA CMPLT CAR A4 UPR 350LGD 16″ 10RD
$51 off
Original price was: $740.00.Current price is: $688.99.
Out of stock. Want to be notified?
San Tan Tactical

AR15 Uppers
SANTAN STT-15 PILLAR UPPER RECEIVER
$4 off
Original price was: $210.00.Current price is: $206.50.
Out of stock. Want to be notified?
SilencerCo

AR15 Uppers
SCO SCO15 UPPER RECEIVER BLK
$219.00
Out of stock. Want to be notified?
Sharps Bros

AR15 Lowers
SHARPS BROS LIVEWIRE AR-15 – STRIPPED LOWER RECEIVER
$8 off
Original price was: $157.84.Current price is: $149.95.
Out of stock. Want to be notified?
Sharps Bros

AR15 Lowers
Sharps Bros SBLR11 Showdown Stripped Lower Multi-Caliber Black
$15 off
Original price was: $299.95.Current price is: $284.95.
Out of stock. Want to be notified?
Sharps Bros

AR15 Lowers
SHARPS BROS THE JACK AR-15 – STRIPPED LOWER
$15 off
Original price was: $289.95.Current price is: $275.45.
Out of stock. Want to be notified?
Sig Sauer

AR15 Stocks, Forends, Forearms
Sig Sauer Low Profile Tube Folding Stock Assembly
$50 off
Original price was: $249.99.Current price is: $199.99.
Out of stock. Want to be notified?
SilencerCo

AR15 Lowers
SilencerCo SU4766 SCO15 Lower Receiver Black Anodized Finish
$269.00
Out of stock. Want to be notified?
Sons of Liberty Gun Works

AR15 Uppers
SOLGW L89 V2 5.56 13.7″ NOX BLK
$50 off
Original price was: $1,000.00.Current price is: $950.00.
Out of stock. Want to be notified?
Sons of Liberty Gun Works

AR15 Lowers
SOLGW M4 LOWER LFT A5 BRAVO RBL STRP
$39 off
Original price was: $599.00.Current price is: $559.99.
Out of stock. Want to be notified?
Spikes Tactical

AR15 Uppers
SPIKE’S 556NATO UPPER 16″ CHF/FSP
$70 off
Original price was: $700.00.Current price is: $630.00.
Out of stock. Want to be notified?
Spikes Tactical

AR15 Uppers
SPIKE’S FLAT TOP UPPER 9MM BLK
$12 off
Original price was: $115.00.Current price is: $103.50.
Out of stock. Want to be notified?
Spikes Tactical

AR15 Uppers
Spikes SFT50M4 Flat Top Stripped Upper Multi-Caliber 7075-T6
$12 off
Original price was: $115.00.Current price is: $103.50.
Out of stock. Want to be notified?
Spikes Tactical

AR15 Lowers
Spikes STLB630 Rare Breed Samurai Stripped Lower Receiver
$328.46
Out of stock. Want to be notified?
Spikes Tactical

AR15 Uppers
Spikes STU5435R2S Complete Upper 5.56x45mm NATO 16″ Black
$788.40
Out of stock. Want to be notified?
Spikes Tactical

AR15 Lowers
Spikes Tactical STLB960PCH Rare Breed Crusader 9mm Luger,
$436.50
Out of stock. Want to be notified?