Foxtrot Mike .223 Wylde ( 5.56 NATO/.223 Rem ) 12.5\" Complete Upper, 11.75\" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5

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$Foxtrot Mike Products Foxtrot Mike .223 Wylde ( 5.56 Nato/.223 Rem ) 12.5\" Complete Upper, 11.75\" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5 - Upper Receiver for AR-15 - view 1$

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Foxtrot Mike Products

Overview

The Foxtrot Mike .223 Wylde Complete Upper features a 12.5-inch barrel and a mid-length gas system, making it a versatile choice for builders looking to optimize performance across both .223 Rem and 5.56 NATO ammunition. This upper is designed specifically for the AR-15 platform and includes a non-reciprocating forward charging handle for easier operation. Builders often incorporate this upper in configurations that prioritize compactness while maintaining reliable gas operation and accuracy with the .223 Wylde caliber.

Specifications

MPNFM556-GEN2-12.5

Gas System LengthMid-Length

AssemblyComplete

Caliber.223 Wylde

PlatformAR-15

Barrel Length12.5

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Foxtrot Mike .223 Wylde ( 5.56 NATO/.223 Rem ) 12.5\" Complete Upper, 11.75\" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5

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Build history on GunPartPicker

Builders on GunPartPicker first added the Foxtrot Mike .223 Wylde ( 5.56 NATO/.223 Rem ) 12.5\" Complete Upper, 11.75\" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5 to a build in February 2026.

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Updated Oct 8, 2026 · from real builds on GunPartPicker