Sons of Liberty Gun Works M4-EXO3 5.56mm 11.5" Bbl Carbine Gas EXO3 Rail A2 FH Black Complete Fighting SBR (NFA) M4-EXO3-556-115-SBR-A-BLK

The Sons of Liberty Gun Works M4-EXO3 is a compact, duty-grade Short Barreled Rifle (SBR) designed for high-performance handling in tight spaces and vehicle operations. Built with an 11.5-inch Liberty Fighting Barrel and a carbine-length gas system, it offers the ideal dwell time for reliability while maintaining a short overall profile. The EXO3 handguard provides a streamlined M-LOK mounting system that sheds weight compared to the L89 series, making it an excellent choice for a fast-handling "Fighting SBR." Like all SOLGW builds, it is optimized with the A5 Buffer System to broaden the operational window and includes the Liberty Fighting Trigger for a consistent, professional-grade pull. As a factory SBR, this firearm falls under the National Firearms Act (NFA) and requires a Form 4 transfer. Sons of Liberty Gun Works M4-EXO3 5.56mm 11.5" Bbl Carbine Gas EXO3 Rail A2 FH Black Complete Fighting SBR (NFA) M4-EXO3-556-115-SBR-A-BLK