The tool combines multiple functions including a spanner wrench for M4-style buttstocks and interchangeable pins for nuts with both round and square teeth.
Additional features include a screwdriver blade for fixed rifle buttstocks, a wrench for receiver extension tube nuts, and a ½" square opening for torque wrenches.
The product comes in a 3-pack with pins in both round (stainless steel, silver finish) and square (steel, blue finish) shapes, catering to different nut styles.