Comp FSB 5.56 Assembled Upper 16" M4 Bbl W/MOE SL Carb Handguard BLK

Name: Comp FSB 5.56 Assembled Upper 16" M4 Bbl W/MOE SL Carb Handguard BLK
Brand: Aero Precision
Availability: OutOfStock

Aero Precision · Upper Receiver

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Best price

$409.99at Brownells

Out of stock checked Oct 1, 2026

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Where to buy

Store	Price	Availability	Buy	Add to build
Brownells Best price	$409.99checked Oct 1, 2026	Out of stock	Buy at Brownells
OpticsPlanet	$409.99Salechecked Oct 1, 2026	Out of stock	Buy at OpticsPlanet

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Dashed line = out of stock. Tracking since Sep 28, 2026.

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Store	Latest	Lowest	Highest
Brownells	$409.99	$409.99	$409.99
OpticsPlanet	$409.99	$409.99	$409.99

Since Sep 28, 2026.

About this part

The Comp FSB 5.56 Assembled Upper 16" M4 Bbl W/MOE SL Carb Handguard BLK is an AR-15 complete upper receiver from Aero Precision. It's sold by 2 stores, all at $409.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 16" · Handguards

Specifications

Manufacturer: Aero Precision
Color: Black
Type: Complete
Platform: AR-15
Caliber: 5.56 mm NATO

From the manufacturer

AR15 Assembled Upper, 5.56 Nato Carbine Barrel W/Pinned Front sight base MOE SL or MOE SL ML Carbine Handguard - Black Available in 10.5" or 16" barrel. 10.5" Upper Features: Upper: Standard AR15 Upper Receiver Barrel: 10.5" 5.56 Carbine Barrel w/ Pinned FSB Handguard: Magpul(TM) MOE SLA(R) Carbine Handguard Gas System: Carbine Length Gas System Muzzle Device: Standard A2 Flash Hider 16" MOE SL Upper Features: Upper: Standard AR15 Upper Receiver Barrel: 16" 5.56 Carbine Barrel w/ Pinned FSB Handguard: Magpul(TM) MOE SLA(R) Carbine Handguard Gas System: Carbine Length Gas System Mfg: Aero Precision