Feature：

➤ For Tokyo Marui VSR10/ MLC-338 Sniper Rifle.
➤ Big bore high volume cylinder set with larger piston (please do not use with original cylinder).
➤ Compatible with CNC "Hen Li Hai" Zero Trigger.
➤ New piston cocking/loading indicator will "Rise up" to show the piston is cocked with red mark.
➤ VSR M165 Spring included.
➤ Scope mount rail included.
➤ The washers packs：M5*4pcs for stock screw, M3*2pcs for trigger box.