Is this Glock magazine preban?

[RNSsports]

I saw a reference picture on Google images, and it seems to be that this magazine is preban. I know it's under 10 rounds, so even if it was postban, it would still be legal, but I was wanting to put an extension on it (which would be illegal in MA if it was a postban mag). Thanks in advance guys!

 

[bostonasphalt2]

Whatever image you found on Google is definitely not definitive across all generations of magazines. Someone posted it here and said a Glock armored told them it was correct, however Glock itself doesn't have record keeping good enough to back it up (in essence).

 

[M1911]

See the Glock magazine thread: http://northeastshooters.com/vbulletin/threads/4944-MA-Identifying-Pre-Ban-Glock-Mags/page54