Sons of Liberty Gun Works M4-EXO3 5.56 AR-15 Upper - 13.7"

If you're searching for a quality upper receiver that provides superior performance with more features you'll expect to see for the price, Sons Of Liberty Gun Works offers the M4-EXO3 upper with a 13.7-inch barrel chambered to handle a 5.56 NATO round. The M4-EXO3 is SOLGW's latest entry-level upper receiver manufactured to provide you with minimum maintenance and exemplary performance for years. This M4-EXO3 receiver is a third-generation AR15 upper receiver from SOLGW in their field-tested EXO series upper receivers and rifles. While the barrel is only 13.7 inches, Suns Of Liberty Gun Works has pinned and welded it to make the receiver's overall length 16 inches long with SOLGW's patented NOX muzzle device. When you need an upper receiver that can handle dynamic environments and still perform, the M4-EXO3 upper from Sons Of Liberty Gun Works features a barrel of 4150 Chrome Moly Vanadium that's been pressure and heat treated. With an M4-EXO3 from SOLGW, you'll get dependable performa