GUNTEC USA RELEASES NEW 5.5 INCH AR-15 556 BARREL
GunTec USA has recently released their new ultra-short 5.5 inch 5.56mm AR-15 pattern barrel. SPECIFICATIONS: 4150 Chromoly Steel 5.56/.223 Chambered in 5.56×45 1/2 by 28 Thread 1:5 Twist Contour Profile…