Colt

Colt M4CQB Replacement Barrel Stripped 10.3in

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Colt M4cqb Replacement Barrel Stripped 10.3in - Barrel for AR-15 - view 1
Colt M4cqb Replacement Barrel Stripped 10.3in - Barrel for AR-15 - view 2
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Colt

Overview

The Colt M4cqb Replacement Barrel is a 10.3-inch M4 profile barrel designed for the 5.56 NATO caliber, making it suitable for compact and lightweight builds. With a carbine-length gas system and a 1:7 twist rate, this barrel offers optimal performance for stabilization of a range of bullet weights, ensuring reliable cycling and accuracy. This barrel is commonly found in builds that prioritize maneuverability and versatility, such as short-barreled rifles (SBRs) and tactical setups.

Specifications

MPN64046
FinishBlack
Barrel Length10.3
Gas System LengthCarbine
Barrel ProfileM4
Caliber5.56 NATO
Twist Rate1:7
CoatingNitride

Available Merchants(1)

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$239.99
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October 2026 on GunPartPicker

Colt M4CQB Replacement Barrel Stripped 10.3in ranked #131 of the 329 barrels builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker since June 2026. Since April 2026, it ranks #200 of the 1,047 barrels builders have added.

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Frequently Built With

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

Geissele Automatics AR-15 SSA X Lightning Bow Trigger

Geissele Automatics AR-15 SSA X Lightning Bow Trigger

Trigger$274in 33% of them
Daniel Defense 14.5" 5.56 M4A1 AR-15 Complete Upper - Flat Dark Earth

Daniel Defense 14.5" 5.56 M4A1 AR-15 Complete Upper - Flat Dark Earth

Upper Receiver$1,544in 17% of them
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Lower Receiver$155 · out of stockin 17% of them
Knights Armament Ras Handguard 'Too Long' Free Float Picatinny Black

Knights Armament Ras Handguard 'Too Long' Free Float Picatinny Black

Handguard$338 · out of stockin 17% of them
Geissele Super Charging Handle (SCH), 7.62, Desert Dirt Color 05-476S

Geissele Super Charging Handle (SCH), 7.62, Desert Dirt Color 05-476S

Charging Handle$136in 17% of them
Magpul MBUS AR-15 Iron Sight Front Flip Up, FDE - MAG247-FDE

Magpul MBUS AR-15 Iron Sight Front Flip Up, FDE - MAG247-FDE

Iron Sights$25in 17% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

91.7%
AR-1591.7%
AR-105.2%
AR-93.2%

Builds Featuring This Part

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Builds in the community that include the Colt M4cqb Replacement Barrel Stripped 10.3in

BuildPartsTotal
Aero precision 10.3" build
Aero precision 10.3"		22$1757.22
For nothing in particular 10.3" build
For nothing in particular 10.3"		7$2847.48
carbine 10.3" build
carbine 10.3"		8$1750.13

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