Silverback Polycarbonate Hop Up Unit For TAC 41 Sniper Airsoft

Key Feature Polycarbonate Construction Airsoft Hop Up Unit TDC design, can be used no matter the scope used 50 indexed positions (by 15 ?m increment) 60? Hop Up Rubber AEG Anti Double Feed System Design For Replace the Original Airsoft Internal Parts Suitable For Silverback TAC 41 Airsoft Sniper Rifle