Britannia Rails Savage Axis/Edge
Available in 0MOA made in true mil spec picatinny, this rail allows for a firm lock onto your rail's dovetail. Six grub screws pull the rail up, locking it tightly into place.
Held in place by four grub screws, for fitting remember it's like a mullet, short in the front and long in the rear. (One 1x6-48x.200 - Front & three 3x6-48x.260 - Rear).