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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 63607 posts
AR15 Lowers
Bushmaster 0020010BLK M4 Built Lower Receiver
$58 offOriginal price was: $282.95.$224.72Current price is: $224.72.
AR15 Uppers
Bushmaster 0040004BLK M4 Patrolman’s Upper 5.56x45mm NATO 16″
$71 offOriginal price was: $705.95.$635.35Current price is: $635.35.
AR15 Lowers
BUSHMASTER A2 BUILT LOWER RECEIVER
$35 offOriginal price was: $339.95.$305.18Current price is: $305.18.
AR15 Uppers
BUSHMASTER BRAVO ZULU 450BM 20″ UPPER
$65 offOriginal price was: $647.95.$583.02Current price is: $583.02.
AR15 Bolts
Bushmaster F1002891 Bolt Carrier Group 5.56/300BLK Chrome Lined
$7 offOriginal price was: $142.20.$135.16Current price is: $135.16.
AR15 Lowers
Bushmaster M4 Built Complete AR15 Lower Receiver –
$60 offOriginal price was: $593.95.$533.72Current price is: $533.72.
AR15 Lowers
Bushmaster M4 Forged Complete AR15 Lower Receiver –
$37 offOriginal price was: $357.95.$321.32Current price is: $321.32.
AR15 Uppers
BUSHMASTER M4 PATROLMAN 16″ UPPER REC.
$69 offOriginal price was: $686.95.$617.82Current price is: $617.82.
