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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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1 - 16 of 53653 posts
AR15 Uppers
AERO M4E1-T UPPER 5.56 16″ BLK
$65 offOriginal price was: $655.00.$589.99Current price is: $589.99.
AR15 Parts
AERO M5 15 ATLAS R-ONE MLOK HANDGUARD FDE
$0 offOriginal price was: $245.00.$244.99Current price is: $244.99.
AR15 Uppers
Aero Precision APAR501603C Receiver Multi-Caliber 7075-T6 Aluminum Black
$10 offOriginal price was: $115.00.$104.99Current price is: $104.99.
AR15 Uppers
Aero Precision AR15 Barreled Upper 16″ 5.56 M4
$45 offOriginal price was: $440.00.$394.99Current price is: $394.99.
AR15 Uppers
ALEX STANDARD UPPER 17HMR FLUTED BARREL
$95 offOriginal price was: $979.48.$884.00Current price is: $884.00.
AR15 Uppers
ALEXANDER AR15 DIY 16″ UPPER – KIT 6.5
$183 offOriginal price was: $762.95.$580.00Current price is: $580.00.
AR15 Uppers
ALEXANDER AR15 STANDARD UPPER
$299 offOriginal price was: $961.95.$663.00Current price is: $663.00.
Other AR15 Accessories & Parts
ALEXANDER AR15 UPPER HUNTER – 6.5 GRENDEL 18″
$305 offOriginal price was: $1,094.95.$790.00Current price is: $790.00.
AR15 Uppers
ALEXANDER UPPER RECEIVER AR15 – PISTOL 50 BEOWULF
$129 offOriginal price was: $918.95.$790.00Current price is: $790.00.
AR15 Lowers
AMERICAN TACTICAL INC MILSPORT COMPLETE LOWER REC
$51 offOriginal price was: $249.99.$199.00Current price is: $199.00.
AR15 Lowers
ANDERSON AM9 9MM PARTIAL LOWER
$53 offOriginal price was: $252.49.$199.00Current price is: $199.00.
AR15 Lowers
ANDERSON COMPLETE AR-15 PISTOL – LOWER RECEIVER BLACK
$9 offOriginal price was: $174.99.$166.00Current price is: $166.00.
AR15 Bolts
ANGSTADT AR15 BCG 556NATO BLK
$15 offOriginal price was: $139.99.$125.00Current price is: $125.00.