The NcSTAR Crows Foot PRO tool is a must-have for efficient maintenance of 223/5.56 rifle buffer tubes, essential for AR15 and M4 models. Engineered with precision in mind, this compact tool combines durability with functionality, featuring specialized spanner wrenches and a flat blade screwdriver all in one compact design. Crows Foot PRO tool specifically for 223/5.56 Rifle Buffer Tubes AR15/M4 compatible with dedicated castle nut spanner wrenches Integrated flat blade screwdriver for A2 buttstock plate screws Compatible with both 1/2" and 3/8" drive systems Robust steel construction for long-lasting reliability Dimensions: 3.4"L x 3.9"W x 0.4"D Lightweight at only 8.6 ounces for easy transport Elevate your firearm maintenance routine with the NcSTAR Crows Foot PRO tool and experience unparalleled efficiency.