FCW SA58 AEG ACR Stock Adapter Set for Folding Stock Version 
<<As there are some slighty design difference between Classic Army And Jinggong (ASP, 6MM Pro) at folding stock models, please let us know the brand name of your SA58 AEG at remark>>
 
For CA, Jinggong, ASP, 6MM Pro Shop SA58 Folding Stock Version Only
M4 Adapter Be Made By High Tension Nylon
Durable enough for normal usage, will not sure be unbreakable at extreme cases
Adapter For SA58 Folding Stock Receiver and Fixed Stock Reciever will be difference