B&T Industries, Atlas 4″ Flush Cup 1913 Rail, Flat Back, 2.2″–3.5″ Hole Spacing (BT17)

The B&T Industries Atlas 4″ Flush Cup 1913 Rail offers a precision-machined, flat-back design that mounts directly to stocks with a center-to-center hole spacing of 2.2″–3.5″. Crafted from durable aluminum with a hard-anodized finish, this rail features a built-in flush cup for QD sling attachment and a Picatinny/1913 interface for mounting bipods, foregrips, and other accessories. Ideal for upgrading your rifle with both stability and versatility, the 4″ length provides a compact profile without sacrificing functionality. Includes mounting hardware for easy installation.