This Spigot Mount is designed to be used with the MPA BA Lite Chassis, Hybrid Chassis, and our newer BA Chassis and Comp Chassis. The end user can also install a sling stud into one of the 3 10-32 threaded holes on this mount
For Standard BA Chassis and Comp chassis, if yours has the oblong slot cut in the front of the fore-end, then it will accept the spigot mount. This change was made in the summer of 2016 to the Standard and Comp Chassis.
You can order this spigot mount with either a picatinny rail or a RAT dovetail adapter.