PTS EPF2-S Vertical Forgrip thread adapter You can replace the damaged

You can replace the damaged rack with this one

(When your gearbox is locked

Then adjust your horizontal screw so that it is touching your trigger

the Hopup Chamber M4A Pro unit is specially designed with a new BB Latching System to prevent BB dropping after removing the magazine

with the silicone pad you will have better feel for the nice shoots

PTS EPF2-S Vertical Forgrip thread adapter You can replace the damagedPTS EPF2 S Vertical grip , the ultimate stubby vertical grip! Light weight. Low drag snag free design prevents interference with other gear. Clean lines and elegant design provides improved aesthetics and ergonomics. Flat sides give the shooter more torsion for improved yaw control when manipulating the rifle. Aggressive enhanced texturing to increase surface traction but strategically paneled with comfort in mind. Storage compartment for storage of