Asura Dynamics - MI Style AK Gas Tube Rail for AK GBB / AEG Series 20 Inch Nozzle and Hard Piston with

Nozzle and Hard Piston with 7 Metal Teeth  Metal Piston Head w/ Bearings  Cylinder For 301 - 400 mm Inner Barrel  Durable Tappet Plate  Metal Anti-reversal Latch  Spring Guide with Bearings  M135 Spring  Completed Gearbox set ready to upgrade  Anti-Heat & Anti-Wearing Construction  Suitable for AEG brand: King Arms & Other Compatible M4 / M16 Series AEGs  As always

Integrated motion sensor

LAPD™ SIS transitioned to Kimber

Magazine catch design have improved

Asura Dynamics - MI Style AK Gas Tube Rail for AK GBB / AEG Series 20 Inch Nozzle and Hard Piston withAluminum Constructed Top Rail Integrated System Length Adjustable Design Suitable for GHK,LCT,E&L. CYMA,WE,Dboy GBB and AEG AK Series Replacement of your AK Gas Tube (AKM,AKMS,AIMS,AK74,AK105,AK74M) Provide Top Rail for any accessories attachment