Colt

M4 5.56 Upper Receiver Groups - M4 Le6920 Upper Group 16in Stripped

Colt M4 5.56 Upper Receiver Groups - M4 Le6920 Upper Group 16in Stripped - Upper Receiver for AR-15 - view 1
Colt M4 5.56 Upper Receiver Groups - M4 Le6920 Upper Group 16in Stripped - Upper Receiver for AR-15 - view 2
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Colt

Overview

The Colt M4 5.56 Upper Receiver Group is a stripped assembly designed specifically for AR-15 platforms, featuring a 16-inch barrel optimized for the 5.56 NATO caliber. This upper receiver is built to M4 specifications, ensuring compatibility with a wide range of lower receivers and accessories while providing a solid foundation for your next build. Commonly found in versatile carbine setups, this upper is a great choice for those looking to create a reliable and accurate firearm.

Specifications

MPNSP401397
PlatformAR-15
AssemblyStripped
Barrel Length16
Caliber5.56 NATO
Receiver TypeM4

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$473

Frequently Built With

Based on build data

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

100%
AR-15100%

Caliber

100%
5.56 NATO100%

Gas System

50.2%
Mid-Length50.2%
Carbine24.4%
Rifle12.6%
Pistol11.3%
Blowback1.2%
Other0.3%
Frequently Built With Products
ProductCategoryTimes Built Together
BLEM PSA AR15 Complete Classic Stealth Lower, BlackLower Receiver360
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod CCharging Handle259
Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine StockLower Receiver231
Magpul AFG-2 Angled Fore Grip - BlackForegrip166
Radian Raptor Charging Handle & Talon Safety Selector Combo - Od GreenCharging Handle161
Wilson Combat Ar-15 Lo-Profile Gas Block .750" BlackGas Block143
Build Platform Breakdown
PlatformPercentage
AR-15100%
Build Caliber Breakdown
CaliberPercentage
5.56 NATO100%
Build Gas System Breakdown
Gas SystemPercentage
Mid-Length50.2%
Carbine24.4%
Rifle12.6%
Pistol11.3%
Blowback1.2%
Intermediate0.2%
Proprietary0.1%

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