PTS KINETIC SCAR MREX M-LOK 4.9inch RAIL Cylinders & Cylinder Heads This optic features our “Shake

This optic features our “Shake Awake” technology that powers the optic on with slight movement of the 403B

Ventilated for cooling

Electronic: Mechanical trigger

steel loading nozzle for enhanced durability

PTS KINETIC SCAR MREX M-LOK 4.9inch RAIL Cylinders & Cylinder Heads This optic features our “ShakeThe Kinetic MREX Modular Receiver Extension is designed to be simple, durable, and lightweight. The slim profile of the MREX greatly improves the aesthetic of the SCAR by giving it a long sleek profile. Its extended rail length in front of the front sight gas block increases the rifles modularity by increasing the real estate for accessory attachments as well as improves ergonomics by better accommodating the modern forward support hand rifle hold and