The 
LCT LK013 (LK-53 RS Handguard)
 is a specialized first-party upgrade for the LCT LK-53 Airsoft AEG series, designed to replace the original polymer handguard with a tactical rail interface system. 
 
Key Specifications
Construction: Robust build using a combination of steel and 6061 aluminum for a realistic weight and feel.
Rail System: Features a standard 20mm Picatinny (RIS/RAS) system on three sides (left, right, and bottom).
Mounting Slots: The side rails typically offer 13 positions, while the bottom rail provides 10 positions for mounting accessories.
Weight: Approximately 208g.
Compatibility: Designed specifically as a drop-in part for LCT LK-53 series AEGs. Compatibility with non-LCT brands is not guaranteed.