The Battle Arms BAD-ATG Grip Screw is design specifically to fit the BAD-ATG Adjustable Tactical Grips. Stronger than steel at about half the weight, this grip screw is perfect for that lightweight rifle build. FeaturesExtra length designed for the three positions BAD-ATG Grip1.5in Threaded Length (Standard AR15 Grip Screw is 1in Long)1/4-28 Thread PitchSocket Head Cap Screw3/16in Hex Socket Drive Note: Not for standard AR15 style grips