These spring guides are heavy-duty / reinforced for use with stronger springs.  Several types and styles available.   These guides make for a great upgrade on most guns and are factory replacement for all Classic Army AEG's.  Factory spring guides are not designed for the heavier / stonger springs associated with upgrades.  If you are adding a stronger spring, we highly recommend that you also replace the spring guide as well.  You will be glad you did.

 

Please make sure you choose the version that is right for your gun / gear box.

 

Ver 2 / 8 - M4, M15, MP5, G3, Type89....

Ver 3 - AK, AUG, SIG, etc ....