BOLT Compatible with General G3, HK33/53 MP5 AEG/GBB =>shimming is required Tokyo Marui STD AEG :G3 SAS ,MC541 , G3/SG-1 , MP5 =>shimming is required Tokyo Marui Next Gen AEG : MP5(UPside Down the fixing block)=>shimming is required VFC;s MP5 after 2021
