AimPoint 3X Magnifier with Twist Mount Picatinny Spacer Kit n/a Imported Mountable on a rail system behind Aimpoint sights Extremely fast and ingenious mounting solution (Twist Mount - Picatinny) Can also be mounted with a regular 30 mm ring NVD compatible, recommended mount on any MIL-Std 1913 Picatinny Rail 3XMag can also be attached to aftermarket flip to side mounts