Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only.

The BT15 - 3.35" 1913 Picatinny Rail will accommodate hole patterns with a center to center spacing of 1.76 – 2.78" and a relieved back to accommodate curved surfaces. It also has a flush cup allowing the use of Flush Cup sling swivels and sling studs (neither provided).

The BT17 - 4" 1913 Picatinny Rail will accommodate hole patterns with a center to center spacing of 2.2 – 3.5" with a FLAT back to accommodate flat surfaces. It also has a flush cup allowing the use of Flush Cup sling swivels and sling studs (neither provided).