US$ 56.65
Closed Bolt
: AK-23(BK)
Power (Muzzle Velocity):
Taflon Grease
Half-Teeth Polycarbonate Piston use only
Guarder Bore-Up Cylinder Set for TM SIG-551/552 Category_Safety Closed BoltThe Bore Up Cylinder Set needs with M120~M170 Spring. Include: Stainless Bore Up Cylinder Head Bore Up Air Seal Nozzle Bore Up Ventilation Piston Head Bore Up Chromium Plating Cylinder Material: S303 Stainless Steel Brass Polycarbonate Acetal Item No.: GL 03 30