The 2A Armament BL RAIL Gen 2 M-LOK series. By utilizing an Aluminum barrel nut, and an innovative 45 degree mounting system, the BL RAIL achieves a solid lockup with the upper receiver. The 2A Armament BL RAIL will ship with a 7075-T6 Aluminum barrel nut. The BL RAIL Gen 2 is a great fit on any quality forged or billet upper receiver offered from other manufacturers.
Part Number: 2A-BLRML-15G2