AKA M870 Metal CNC Piston or Plunger Cylinder Type:cylinder (black) this handguard is the best

this handguard is the best choice for any blaster enthusiast

and highly stable — won't easily shift or come off under stress

this sight is versatile and easy to use for all your shooting needs

battery type: 3v cr123a

AKA M870 Metal CNC Piston or Plunger Cylinder Type:cylinder (black) this handguard is the bestThis CNC piston cylinder upgrade parts are compatible with all aka m870 blasters, such as aka m870 r1, aka m870 r2 and aka m870 r3. Improve durability, firepower and support powerful spring. Specifications: Brand: alpha king. Material: cnc alloy metal. Color: black gold gray. Package includes: 1x aka m870 metal piston or cylinder.