Strong Arm Mount by FLATLINE OPS Want to make your Flatline Ops ACCU/LEVEL even more precise? Just add the STRONG ARM. The STRONG ARM mounts quick and easy onto accessory dove tail of the ACCU/LEVEL. It positions your ADI for unobstructed view of uphill and downhill trajectory angles. Made of 6061-T6 aircraft aluminum and you will know why its called the STRONG ARM. Each STRONG ARM is hard anodized with a military spec finish and boasts all stainless steel hardware. * STRONG ARM is interchangeable with any size ACCU/LEVEL. If you have multiple firearms with different ACCU/LEVEL sizes and you can move one STRONG ARM and ADI between them all. *Installation tool included.