Is there a 10 rd .338 CIP AICS mag?

Know this post is a bit old, but I come across this question a lot as I have always wanted to know if an option existed as the OP asked. To my knowledge, the answer is no.

That being said, to reconcile the different answers above, I show pictures to clarify. Below is the standard legacy AI 338-CIP 5 round magazine version for old school 338-CIP thumbhole chassis:

338-CIP-NoTab-AICS.png



For comparison, below is a newer variety for the AIAX chassis which is a close version, but not useable in an old school AICS 338-CIP single stack magazine chassis. Beware the front tab magazine difference which will prevent old school 338-CIP AICS magazine users from inserting the below tabbed version into an old school AICS 338-CIP chassis single stack magazine well:

AICS-338CIP-5round.png


What the OP and I would like to have is a version of the 10 round single stack version of the AI 300 Win Mag single stack version for the 338-CIP for the old school legacy thumbhole AICS chassis:

AICS-300WinMag-10round.png


However no such 10 round single stack 338 CIP magazine version exists. The version that does exists that people refer to is the 10 round AIAX version:

AIAX-338CIP-10round.png


This AI AX 338 10 round version is double stack and does NOT fit into the single stack wells of the old school AI 338-CIP single stack magazine wells of legacy AI 338-CIP thumbhole chassis.

I am open to correction if others are willing to post picture proof. That is, I will be first in line to buy such an option, like the OP, if it existed or is found to exist. Alas, to my knowledge, 10 round single stack 338-CIP magazine versions or any 10 round versions of 338-CIP magazines do not exist for legacy AI thumbhole stock 338-CIP chassis.
 
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