LCT Airsoft have more upgrade options:
You have more choices for your AIMS and TIMS by PK-200 TK104 Stock Tube, BABY WARRIOR (TX-BABY, AKBABY) with PK-61 Steel Receiver.
PK-200 TK104 Stock Tube instruction video→ https://www.youtube.com/watch?v=ZkIdzMC2fFU
