Daniel Defense

M4A1 FSP 5.56x45mm 14.5"BBL Stripped Upper W/12.25"Handguard

All Daniel Defense upper receivers
Daniel Defense M4A1 FSP 5.56x45mm 14.5"BBL Stripped Upper W/12.25"Handguard - Upper Receiver for AR-15 - view 1
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Daniel Defense

Overview

The Daniel Defense M4A1 FSP 5.56x45mm 14.5"BBL Stripped Upper W/12.25"Handguard is a upper receiver. Compare prices from multiple merchants and find the best deal.

Specifications

MPNBROWNELLS-M4A1 FSP
PlatformAR-15
AssemblyComplete
ColorBlack
Barrel Length14.5
Caliber5.56 NATO
Receiver TypeM4
FinishHardcoat Anodized

Available Merchants(1)

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$900
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September 2026 on GunPartPicker

Daniel Defense M4A1 FSP 5.56x45mm 14.5"BBL Stripped Upper W/12.25"Handguard ranked #117 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since May 2026. All time, it ranks #166 of the 1,682 upper receivers builders have added.

Today the one retailer we track has it in stock. Buying today, the lowest price is $899.99 at Brownells.

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Frequently Built With

The part most often added in each category by the builds that include this one

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Bolt Carrier Group$199in 22% of them
Radian Weapons ADAC-15 Stripped Lower Receiver - Gray, .223 Remington/5.56x45mm, Premium Quality for Reliable and Accurate AR Builds - R0388

Radian Weapons ADAC-15 Stripped Lower Receiver - Gray, .223 Remington/5.56x45mm, Premium Quality for Reliable and Accurate AR Builds - R0388

Lower Receiver$515in 22% of them
PRI M84 Gas Buster AR-15 Charging Handle w/ Combat Latch

PRI M84 Gas Buster AR-15 Charging Handle w/ Combat Latch

Charging Handlein 22% of them
Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154"

Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154"

Trigger$202in 11% of them
Ergo 2 Ambidextrous Suregrip KIT f/AR-15/AR-10 Graphite Grey

Ergo 2 Ambidextrous Suregrip KIT f/AR-15/AR-10 Graphite Grey

Pistol Grip$22 · out of stockin 11% of them
Magpul MAG370FDE ACS Carbine Stock Flat Dark Earth Synthetic for AR15 M16 M4 with MilSpec Tube (Tube Not Included)

Magpul MAG370FDE ACS Carbine Stock Flat Dark Earth Synthetic for AR15 M16 M4 with MilSpec Tube (Tube Not Included)

Stock & Brace$65 · out of stockin 11% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.3%
Mid-Length50.3%
Carbine25.7%
Pistol11.4%
Rifle11%
Blowback1.3%
Other0.3%

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