Personally, instead of finding an adapter I would opt for changing out the connector itself (probably to deans)
https://youtu.be/6iIym3yYhho - skip to 3:00
Selling two boneyard airsoft glocks would prefer selling together but would consider a good offer for individual
Contents
1 Raven Glock
1 Raven partial Glock mag
1 KSC Glock
2 KSC partial Glock mags
1 magwell extender for Raven
1 Spare spring set for KSC
Postage £12
If more info is required just message